User talk:70.36.252.223

Corrections
Thompson's slingshot couldn't have debuted at the 1955 Nationals. The December 1954 issue of Hot Rod magazine included an article on the first "California State Championship Drags." Thompson's slingshot was present at the meet in the same general configuration as seen at the 1955 Nationals. No specific date is given for the event in the article, but as the magazine feature was released in December, the event had to have taken place some time in 1954.