In 1977 while in Portland, Oregon, Koichi Tohei Sensei appeared for 4 days on a PBS television show called "New You". He taught the host of the show one-on-one and covered basic Ki principles, breathing, meditation and Ki exercises.
Part 1 - https://youtu.be/gp3l2StshEw
Part 2 - https://youtu.be/9nlU3rl1Npo
Part 3 - https://youtu.be/z7wVb8TJQQ8
Part 4 - https://youtu.be/DZUdO20nsOk