Very nice work!
I do have one addition.
Peter's last name is DeVries. He was also on Tic Tac Dough in 1978; his first name was spelled Pieter there. Safe to say he did a little better on TTD, his final tally there was $124,100. He returned for a 1983 Tournament of Champions, but was eliminated early, winning $1,000 for the Christian Children's Fund.
A couple scattered episodes of his TTD run, including his last episode, are on YouTube.