Tom Laughlin used the pseudonym T.C. Frank for his director's credit. The name stands for his three children, Frank, Teresa, and Christina
Banned in Sweden for its violence in 1968, 1972 and 1975.
When Billy Jack and Vicky Barrington meet the astrologer in the restaurant, he asks Billy when his birthday is. Billy replies "August 10th." This is the birthday of Tom Laughlin, who plays Billy Jack.