I have early edition pamphlets from Koichi Tohei sensei available for sale.
Ki Breathing Methods (ki no ko kyu ho) third printing 1979
Ki Meditations (ki no sei za ho) second printing 1977
How to Develop Ki (ki no shu ren ho) second printing 1974
These are very rare publications. In good condition with some color fading on all covers, and a small stain on the back cover of "How to Develop Ki." I am selling the set for $400.
I hope this is not considered "blatant commercial advertising."