[4] He served in the United States Air Force as a crew chief during World War II in Corsica and Italy between 1942 and 1945 on a B-25 bomber.
[4] He moved from the Springfield, Massachusetts, area to a five-acre ranch that he built near Boyertown, Pennsylvania, in the mid 1950s.
[4] Thomson won the 1948 United Car Owners Association (UCOA) New England title after winning 32 midget events.
[4] He won the 1952 AAA Eastern division midget car championship after winning twice at Williams Grove Speedway.
[4] In October, he crashed at the California State Fairgrounds Race Track suffering internal injuries.
[4] In 1959, he raced primarily in champ cars and finished third in national points after a win at Milwaukee plus three fast times.
[4] He had a wreck in a sprint car race at Williams Grove in September and missed the rest of the season.
[4] AAA ended sanctioning after the 1955 season and it was replaced by the United States Automobile Club (USAC) in 1956.
[4] Thomson's sprint car races in 1957 were primarily in the USAC Eastern division; he won twice at Reading and once at the Allentown fairgrounds to finish third in points.
He started on the pole once, set 1 fastest lead lap, and finished on the podium once, accumulating a total of 10 World Championship points.