Trenton 300 (Race 2)
Trenton International Speedway, 15 Apr 1973
|1||Mario Andretti||Parnelli VPJ-2 [102?] - Offy 159 ci turbo
#11 Viceroy [Vel's Parnelli Jones Racing]
|100||1h 00m 09.000s
|2||Billy Vukovich||Eagle 72 [7204?] - Offy 159 ci turbo
#2 Sugaripe Prune [Jerry O'Connell/Jud Phillips]
(see note 1)
|3||Al Unser||Parnelli - Offy 159 ci turbo
#4 Viceroy [Vel's Parnelli Jones Racing]
|4||Swede Savage||Eagle 72  - Offy 159 ci turbo
#42 Patrick Racing [Patrick Racing Team]
(see note 2)
|5||Joe Leonard||Parnelli VPJ-2 - Offy 159 ci turbo
#1 Samsonite [Vel's Parnelli Jones Racing]
|6||Roger McCluskey||McLaren M16A  - Offy 159 ci turbo
#3 Hopkins Buick [Lindsey Hopkins]
(see note 3)
|7||Dick Simon||Eagle 72  - Foyt-Ford 159 ci quad cam turbo V8
#44 Travelodge [Dick Simon] (see note 4)
|8||Mike Mosley||Eagle 68  - Offy 159 ci turbo
#98 Leader Card [Agajanian/Leader Card]
(see note 5)
|9||Lee Kunzman||Eagle 72  - Offy 159 ci turbo
#16 Hopkins [Lindsey Hopkins/Duane Glasgow]
(see note 6)
|10||Mel Kenyon||Eagle 72  - Foyt-Ford 159 ci quad cam turbo V8
#19 Hopkins [Lindsey Hopkins/Don Kenyon]
(see note 7)
|11||AJ Foyt||Coyote 73 ['73-1'] - Foyt-Ford 159 ci quad cam turbo V8
#14 Gilmore Racing [Foyt Enterprises]
(see note 8)
|88||Broken oil line|
|12||Lee Brayton||Coyote 72 ['72-1'] - Foyt-Ford 159 ci quad cam turbo V8
#61 Diamond Reo (see note 9)
|13||Mike Hiss||Eagle 72 [7209?] - Offy 159 ci turbo
#6 Thermo King Air Cond [Don Gerhardt]
(see note 10)
|14||Larry McCoy||Atlanta 72 - Offy 159 ci turbo
#63 Eastern Racing Associates [Larry McCoy]
(see note 11)
|15||Bobby Unser||Eagle 73  - Offy 159 ci turbo
#8 Olsonite [AAR] (see note 12)
|16||Bentley Warren||Eagle 67 - Offy 159 ci turbo
#36 Bay State Racing (see note 13)
|17||Gary Bettenhausen||McLaren M16C  - Offy 159 ci turbo
#5 Sunoco DX [Roger Penske] (see note 14)
|18||Crockey Peterson||Kingfish 70 or 71 - Offy 159 ci turbo
#38 Dr. Pepper [Crockey Peterson]
(see note 15)
|19||Dee Jones||Mongoose 71 - Ford 159 ci quad cam turbo V8
#51 Minnesota Serendipity [Pat O'Reilly]
(see note 16)
|20||Joe Tetz||Watson 67 - Chevrolet 320 ci V8
#55 Stephens (see note 17)
|21||Gordon Johncock||Eagle 72  - Offy 159 ci turbo
#25 Patrick Petroleum [Patrick Racing Team]
(see note 18)
|1||AJ Foyt||Coyote 73 ['73-1'] - Foyt-Ford 159 ci quad cam turbo V8|
|2||Gordon Johncock||Eagle 72  - Offy 159 ci turbo|
|3||Billy Vukovich||Eagle 72 [7204?] - Offy 159 ci turbo|
|4||Mario Andretti||Parnelli VPJ-2 [102?] - Offy 159 ci turbo|
|5||Swede Savage||Eagle 72  - Offy 159 ci turbo|
|6||Gary Bettenhausen||McLaren M16C  - Offy 159 ci turbo|
|7||Al Unser||Parnelli - Offy 159 ci turbo|
|8||Roger McCluskey||McLaren M16A  - Offy 159 ci turbo|
|9||Mike Mosley||Eagle 68  - Offy 159 ci turbo|
|10||Dick Simon||Eagle 72  - Foyt-Ford 159 ci quad cam turbo V8|
|11||Lee Kunzman||Eagle 72  - Offy 159 ci turbo|
|12||Mel Kenyon||Eagle 72  - Foyt-Ford 159 ci quad cam turbo V8|
|13||Joe Leonard||Parnelli VPJ-2 - Offy 159 ci turbo|
|14||Mike Hiss||Eagle 72 [7209?] - Offy 159 ci turbo|
|15||Lee Brayton||Coyote 72 ['72-1'] - Foyt-Ford 159 ci quad cam turbo V8|
|16||Bobby Unser||Eagle 73  - Offy 159 ci turbo|
|17||Larry McCoy||Atlanta 72 - Offy 159 ci turbo|
|18||Bentley Warren||Eagle 67 - Offy 159 ci turbo|
|19||Crockey Peterson||Kingfish 70 or 71 - Offy 159 ci turbo|
|20||Dee Jones||Mongoose 71 - Ford 159 ci quad cam turbo V8|
|21||Joe Tetz||Watson 67 - Chevrolet 320 ci V8|
Notes on the cars:
- Eagle 72 [7204?] (Billy Vukovich): One of two 1972 Eagles bought new by Jerry O'Connell's Sugaripe Prune team and raced by Billy Vukovich as the #3 entry in 1972, with Jud Phillips as chief mechanic. As the later history of 7207 is known from an invoice, and as the cars have distinct differences that can be seen in photographs, 7204 can be safely identified as Vukovich's 1972 Indy 500 car, after which it swapped roles with 7207 and became his short track car. It remained his short track car in 1973, and is then believed to have raced just twice in 1974. Sold to Donald Mergard and very probably the car raced by Bob Harkey as Mergard Racing's #42 entry at Michigan late that season. Retained by Mergard for another six seasons, racing as the #42 with numerous drivers and sponsors. In 1981, this car appears to have become Tom Frantz' #71 entry for Bob Frey. Subsequent history unknown.
- Eagle 72  (Swede Savage): One of two 1972 Eagles sold to Patrick Racing for 1973, chassis 7210 is understood to be the car raced by Swede Savage as the #42 Patrick Racing entry and then at the Indy 500 as the #40 STP Oil Treatment Spl. Savage crashed heavily during the race and was very badly burned. He was taken to hospital but died a month later. The car was comprehensively destroyed in the accident.
- McLaren M16A  (Roger McCluskey): McLaren Cars at the 1971 Indy 500 for Peter Revson (#86) and qualified on pole at the Indy 500, finishing second. Probably the #86 car used by Gordon Johncock at Trenton 1972 and the #86 entry that did not arrive at the Indy 500. Then sold to Lindsey Hopkins for Roger McCluskey for the rest of 1972 as the #14 American Marine entry, winning at Ontario. Retained for 1973 as the #3 Hopkins Buick entry and used by McCluskey at Indy and Pocono, before settlig on his newer M16B thereafter. The older M16 was then unused and had been stripped down to a bare monocoque by the time it was sold to John Martin in mid-1975. He used the tub to rebuild the M16B that he had crashed at Milwaukee in June 1975, and the resulting car used the chassis plate and identity of the M16B.
- Eagle 72  (Dick Simon): To Dick Simon, fitted with a Foyt-Ford V8 turbo engine and first raced as his #44 Travelodge entry at Phoenix in November 1972, where he was second fastest in Friday practice. Raced by Simon through 1973 and 1974 as the #44, retaining its Travelodge sponsorship until mid-1974. Returned in 1975 with Bruce Cogle Ford backing and in 1976 with Lan Hairpieces and later Robyn CB sponsorship when it was driven by Roger Rager. Not at Indy in 1977 but later in the year it was acquired by Nick Krantz and entered for Phil Threshie, still as the #44 but now with Mr. Golden Sunflower sponsorship. Crashed by Threshie in practice for the 1977 California 500 at Ontario and not seen again.
- Eagle 68  (Mike Mosley): Dan Gurney's #48 Olsonite entry at the 1968 Indy 500 was a new 1968 Eagle fitted with the Gurney Weslake Ford 303 ci stock block V8 engine. This car was highly successful on road courses later in the year, Gurney winning at IRP, twice at Mosport and at Riverside. The car was sold to Marshall Robbins of Jim Robbins Co. for 1969 and crew chief Jim Spangler fitted a Ford turbo for Lee Roy Yarbrough to drive at the Indy 500. Robbins and Spangler brought the car back to the Speedway for 1970 for Yarbrough to drive. It was last seen with the Robbins team at Ontario in 1970. This was later identified by Carl Hungness as the car raced by Mike Mosley at the 1972 Indy 500, but when the car moved from Robbins to the AJ Watson/Leader Card team is unclear. Mosley crashed this car at the 1972 Indy 500, and was again injured. Photographs of the car at this race show several diagonal rows of rivets at the back of the tub on the left, indicating a major repair. This pattern of rivets then identifies the car in pictures at Ontario in 1972, at Ontario in 1973, and in the present day. After the 1972 Indy 500, Rick Muther used the team's other 1968 Eagle until Mosley again returned from his injuries in September, and this ex-Robbins car was ready for him to drive at the Ontario 500. One or other of the team's 1968 Eagles was raced by Mosley again at Trenton in early 1973, by Johnny Parsons Jr at Milwaukee and by Tom Sneva at Ontario, and as this can be identified as the ex-Robbins car in the latter race, it is assumed the same car was used in the other races. Retained by the Wilke family.
- Eagle 72  (Lee Kunzman): Acquired by the Lindsey Hopkins team at some point late in 1972. It is not yet clear where Lee Kunzman first raced this car for Hopkins, as his #10 car in 1972 was a 1970 Eagle, and only photographs will show exactly where each car was used. The 1972 Eagle was Hopkins' #16 Ayr-Way Lloyds entry for Kunzman, and then became the #16 US Air Force entry for Bentley Warren later that season. It became the #42 Hopkins Buick entry for Jerry Karl to race in 1974. It was wrecked by Karl at the Indy 500, and team crew Duane Glasgow rebuilt it using the 7211 tub to run at Pocono and Michigan with Bentley Warren driving again. Warren had a tyre blow at Michigan in July, hit the wall and wrecked the 7211 tub. Duane then repaired the 7215 tub and had the car ready for Michigan in September with Mel Kenyon driving, but he hit the second turn wall heavily. Neither tub was repaired for racing again and both were later sold by Glasgow to Fred Fuhr (Hastings, MI) who sold them in 1981 to Bill Wiswedel (Holland, MI). Bill sold 7215 to restorer Walt Goodwin in the early 1990s who sold it to his customer Jim Jaeger for whom he then restored it to 1973 Indy 500 form. Run at the Goodwood Festival of Speed in 1999. Jaeger retained the car in 2010.
- Eagle 72  (Mel Kenyon): Driven by Mel Kenyon for the Lindsey Hopkins team over three seasons. It was first raced at Ontario 3 Sep 1972 and was the #23 in 1972 and then the #19 in 1973 and 1974 after being converted to Foyt-Ford power by Eldon Rasmussen. Its tub was used to rebuild 7215 in 1974 but was damaged at Michigan in July when Bentley Warren hit the wall. When the two Eagles were retired, they were sold by Hopkins crew Duane Glasgow to Fred Fuhr (Hastings, MI), who sold them to Bill Wiswedel (Holland, MI) in 1981. Bill sold 7211 to Chuck Haines (St Louis, MO) in 1982 or 1983, who sold it on to Dale Bargman (Denver, CO) in February 1984. Bargmann (later of Gilbert, AZ) fully restored the car but its later history is unknown.
- Coyote 73 ['73-1'] (AJ Foyt): New for AJ Foyt at the Texas 200 at Texas World Speedway in April 1973 as Foyt Enterprises' #14 Gilmore Racing entry. Photographs show that it was also raced by Foyt at Trenton, and then raced by George Snider at the Indy 500 as the #84 entry. It was then raced by Snider at Pocono, by Foyt at the Tony Bettenhausen 200 at Milwaukee in August, and by Snider at Ontario in September. The side-radiator 1973 Coyotes were not seen again after 1973 and were presumably rebuilt into the team's front-radiator 1974 cars.
- Coyote 72 ['72-1'] (Lee Brayton): Built new for AJ Foyt for the 1972 Indy 500, where he qualified in 17th position on day 2, with the fifth fastest time, but retired early. Foyt was injured at DuQuoin the day after the 500 and did not return until Ontario in September, by which time he was reported to have built a new car. However, later history would suggest this was the same car, but with some updates. He led at Ontario, but retired at all three of the remaining races of the season. The car was sold to Lee Brayton for 1973 as the #61 Diamond Reo entry, with John Gleason as his chief mechanic. Brayton raced the car at TWS and Trenton early in the season, but he was unable to qualify for the Indy 500. After damaging the Coyote at Ontario later in the season, Brayton bought the ex-Gordy Johncock 1972 Eagle from Patrick Racing. The Coyote was rebuilt and retained by Brayton as a backup for 1974, still as the #61, and was qualified for the Indy 500 by Rick Muther. After Brayton damaged his Eagle in practice at the Indy 500, he raced the Coyote one more time at Pocono. The car is reported to have gone to Patrick Racing as a show car and presumably was the Sinmast Special Coyote loaned to an Indianapolis bank in May 1975. However, Brayton had acquired sponsorship from Sinmast, who later sponsored Patrick, so maybe it was actually owned by Sinmast. The car's history is then unknown until it was found in "a Chevrolet dealership in Carmel, a northern Indianapolis suburb, in 1984" by Thomas W. Acker (Largo, FL). Acker displayed the car at a car show in Florida in 1990 still in #20 blue-and-white Patrick livery. It was acquired from Acker by Vonnie Sue Martin for her husband Ron Martin (Bluff City, TN) in 2005 and restored to its 1974 configuration by Walter Goodwin. Martin displayed it at the IMS in 2008 and 2011, after which he sold it to Charles Ungurean (Columbus, OH). Ungurean sold it to Bruce Revennaugh (Marble Falls, TX) in 2014. Displayed by Revennaugh at the Indianapolis Historic Indycar Exhibition in May 2017.
- Eagle 72 [7209?] (Mike Hiss): New to Don Gerhardt to replace chassis 7206 destroyed in Jim Malloy's fatal accident at the 1972 Indy 500. Raced by Johnny Rutherford as the #18 Thermo King Special entry for the latter half of 1972. Retained for 1973 when Mike Hiss took over as team driver but Gerhardt had also acquired chassis 7216, and 7209 was used mainly on short tracks that year. Jim McElreath took over the Gerhardt drive in 1974 and used both 7209 and 7216 at the 1974 Indy 500, racing 7209. Gary Bettenhausen rejoined Gerhardt for 1975 and raced 7209 at the Indy 500 and at Pocono, with 7216 now being used on short tracks. For 1976, Bettenhausen used 7216 at the Indy 500, and 7209 was allocated to Eddie Miller but he destroyed the car in a heavy accident during practice. The remains sat at a body shop in Fresno, CA for a long time, before they were acquired by John Mueller for parts to aid in his restoration of 7228. He scrapped what he did not need, but part of the footbox together with the chassis plate were sent to Jacques Dresang as a souvenir.
- Atlanta 72 (Larry McCoy): Completed by Gene White Racing after Atlanta Cars closed, and first seen as the team's #21 Bill Daniels GOP for Cale Yarborough at the 1972 Indy 500. Yarborough was then "asked to step down", and the car was converted from Ford to Offy power for team leader Lloyd Ruby to try in practice at Pocono. It was raced by Jimmy Caruthers as the #52 Wynn's Special at Ontario in September. Almost certainly the Atlanta-Offy sold to Larry McCoy Sr's Eastern Racing for his son Larry McCoy to drive in 1973, backed by James Bidwell's Shurfine Foods. Converted by Eldon Rasmussen to Ras-Car specification for 1974, and raced by McCoy and others up to 1977. To Frank Fiore for 1978, and his #87 Machinists Union entry for Jerry Karl, Phil Threshie and Al Loquasto that season. Then to Buddie Boys, a Calgary trucking magnate, and entered for Bob Harkey at the 1980 Indy 500, but he could not get enough speed out of it. The last that was heard of the car was just before the Milwaukee race, when the engine was said to have blown up during testing.
- Eagle 73  (Bobby Unser): Built in time for Bobby Unser to drive as AAR's #8 Olsonite entry at Texas World Speedway in April. He then used the same car at Trenton, but had a further new car, chassis 7304, for Indianapolis. Exactly how 7302 was then used is still being resolved, but it is assumed for now to be the car he crashed at Milwaukee in August. The unrepaired chassis then sat on pallets at AAR until the autumn of 1975 when it was bought by Joe Hunt (Torrance, CA), repaired, and run by him as the #99 Joe Hunt Magneto entry starting when John Martin drove it in the final race of the 1975 season. Hunt continued to run it at Indy races at Ontario and at Phoenix through the next five seasons. It was taken to the Indy 500 in 1981 for Phil Krueger to drive and was crashed heavily during practice, but rebuilt yet again, and raced until 1982. Subsequent history unknown, but it was acquired by Jack Danko (Laurel Run, PA) in January 2004, and rebuilt to be used in Pensylvania hillclimbs by his son Darryl Danko from 2005 to at least 2011.
- Eagle 67 (Bentley Warren): New to Walt Michner's Michner Petroleum team and described as a new 1968 Eagle for the 1968 Indy 500, but photographs show that it was a 1966/67-type Eagle. Assigned to Mike Mosley, then Rick Muther, then Ronnie Duran, and finally to Bill Cheesbourg, who qualified it but was bumped. Norm Brown then took over the drive but was badly injured at Milwaukee in the accident that took the life of Ronnie Duman and destroyed the Michner Lola T80. Michner then recruited Johnny Rutherford and he drove this car, and a 1966 sister car, in 1969, 1970 and 1971, by which time the team had become Patrick Racing. This 1967 car, nicknamed "Old Shep", appears to have been the road racing car in 1969, and was then the car qualified by Tony Adamowicz for the 1970 Indy 500, but bumped, while Rutherford raced the sister car, known as "Geraldine". In July 1971, the 1967 car was the first of the pair to be fitted with McLaren M16-style wings instead of the wedge bodywork used on "Geraldine" at the 1971 Indy 500. Sold to Bentley Warren for 1972 as his #36 Bay State Racing entry. Retained for 1973 and 1974, after which the car remained in his garage. In the early 2000s, Warren sold the car to a consortium "Eagle Partners", who rebuilt the car to the 1971 wedge-sided configuration used on the sister car, "Geraldine". In 2006, the restored car appeared at the Amelia Island Concours, and in 2007 it was sold at auction by Kruse (Auburn, IN) to Chuck Haines. In 2008, Haines sold it to Jim Vieira, and it appeared at an Indianapolis historic event in 2009. By early 2011, it was at John Mueller of Entrepreneur’s Motor Sports (Fresno, CA), to be restored to Richie Ginther's 1967 #42 livery. In this form, it was sold in 2013 to Rob Dyson (Millbrook, NY). See full history: the Michner Eagle.
- McLaren M16C  (Gary Bettenhausen): To Roger Penske for Gary Bettenhausen to drive during the 1973 season as the #5 Sunoco DX car, and used by him at all races that season. Entered for Mike Hiss as the #68 Norton Spirit entry at Indianapolis and Michigan in 1974. Then the #16 CAM2 Motor Oil entry for Bobby Allison at four long-track races in 1975. Then raced by Mario Andretti for Penske as the #6 in 1976 at the Indy 500 and Pocono. Sold to Bill Simpson later in 1976 (still as #6) together with M16C/4. It then became part of Teddy Yip's Theodore Racing team in 1977 as their #39 but was crashed very heavily by Clay Regazzoni in Indy practice. The wrecked car was cubed by Yip.
- Kingfish 70 or 71 (Crockey Peterson): In 1972, the Two Jacks Indy car team had a #38 entry at the Indy 500 for driver Rick Muther. The car was described as being a new car, a "'72 Brabham copy" built by chief mechanic Howard Millican, but later reports say that it was built by Grant King. Whether it had previously been used by the King team is unclear. The car never ran properly, and Muther made no attempt to qualify. The car was later sold to Crockey Peterson (Flat River, MO), and made its first appearance at Phoenix in late 1972, sponsored by Sidney Salomon Jr and his successful St Louis Blues ice hockey franchise, but failed to start. Peterson was a Pepsi-Cola/Dr Pepper bottler and distributor, and acquired backing from the Doctor Pepper Company for 1973, racing his "1972 Brabham" at Trenton in early 1973 as the #38 Dr Pepper entry. Mechanics for this effort were John Mueller and Ron Finley. He entered for the 1973 Indy 500 but was not allowed to take his rookie test, and his final race appearance was at Milwaukee a week later. Peterson retained the car, and in later years it was on display at his restaurant in Branson, MO. After some time in storage, it emerged again in 2015, still in exactly the livery it last appeared on track in 1973. The car was due to be cosmetically restored and displayed in Mark Pieloch's American Muscle Car Museum, being built in Melbourne, FL in 2016.
- Mongoose 71 (Dee Jones): New for Lloyd Ruby in 1971 as the Gene White team's #12 car but "abandoned by Ruby after that year's Indy 500", presumably as it was the only year for some time that he had not led the race. Sold to Pat O'Reilly and entered as the #51 Minnesota Serendipity car in 1973 for Dee Jones, John Hubbard and Jigger Sirois. Returned in 1974 as the #53 for John Cannon but failed to qualify for the Indy 500. Raced later in 1974 by Jan Opperman and by Mel Cornett and appeared in 1975 for John Hubbard and Cornett again. Wrecked at Milwaukee in June 1975 and, according to Milwaukee Mile Historian Steve Zautke, was "wiped out".
- Watson 67 (Joe Tetz): Pedro Rodriguez had a new #90 Watson-Ford for the 1967 Indy 500 but was bumped. After Rodriguez returned to F1, the new car was raced by Jim Hurtubise, Jim McElreath and Chuck Parsons later that season, an old '66 car only being used a few times. Watson built a new car with an turbo Offy engine for 1968, but the older Ford-engined car was used at most races in 1968, driven by George Snider, Chuck Hulse (in practice for the Indy 500), Mike Mosley, Bud Tingelstad, Bobby Unser and Lothar Motschenbacher. As the last of the Ford-engined cars, it was used primarily on road courses in 1968. Although a further car was built for 1969, the old '67 car was used on road courses with a Chevrolet engine. AJ Watson started running a 1968 Eagle in 1970, but continued to use the 1967 car for Mike Mosley on short tracks, now updated to a turbo Offy engine. It was not seen during 1971, but was sold for 1972 to Joe Tetz (Middletown, NY), who ran it in a few USAC events in 1972 and 1973 with a Chevrolet engine. The next time it is seen with any certainty is when owned by Cyrus Clark (Katonah, NY) in 1987/88, when it was in F5000 configuration with a small block Chevy engine. Clark advertised in Hemmings in June 1988 as the 1967 ex-Rodriguez car and the wings, tanks, nose, rollbar fairing, paint scheme and exhaust headers all matched the car driven by Joe Tetz in 1972. Sold by Clark to Larry Less (San Francisco, CA) and retained by him for many years.
- Eagle 72  (Gordon Johncock): New to Patrick Racing and raced by Gordy Johncock in 1973 as the #25 Patrick Racing entry early in 1973 and then became the #20 STP Double Oil Filter Special at the Indy 500 when Patrick Racing picked up STP sponsorship. Johncock won the Indy 500 in this car but it was wrecked at Pocono in July when a wheel came off and then damaged again at Milwaukee in August in an incident with Johnny Rutherford while Johncock was leading the race. The Eagle was repaired, sold to Lee Brayton and John Eisenhour, and raced by Brayton at Michigan in September 1973 as the #61 Eisenhour-Brayton car, replacing the team's 1972 Coyote. Retained for 1974 when it was Brayton's #28 car, also driven by Mike Hiss at Ontario. Wrecked by Brayton at Indianapolis during practice on 7 May when Tom Bigelow spun in front of him, and extensively damaged, the Daily Reports noting that the Eagle was "apparently a complete loss". Brayton had to return to the old Coyote for Pocono and it is not clear whether he raced the Coyote again at Michigan later in the year or whether the Eagle had been repaired. Retained by Lee Brayton and undergoing restoration at Walter Goodwin's workshop in May 2010. In June 2010, it appears that this car was placed in the Indianapolis Motor Speedway Museum, replacing the mueum's replica of Johncock's 1973 Indy 500 winner. Sold to Bruce McCaw around 2012.
The identification of individual cars in these results is based on the material presented elsewhere in this site and may in some cases contradict the organisers' original results.
The foundation for this research is the work done by the late Phil Harms collating the results of all AAA, USAC and CART races, including the period covered here. His data was refined by Michael Ferner who added more information before making it available to OldRacingCars.com. Since the start of the USAC project on OldRacingCars.com in 2004, a wealth of further information has been gleaned from the Carl Hungness and Donald Davidson Yearbooks, Formula and On Track magazines, USAC News, National Speed Sport News and other published sources. Gerry Measures has also provided much information from his files as have others on TNF and Trackforum. Since 2009, the work of Simmo Iskül and others identifying cars from period photographs has has moved this research forward significantly.