...I would appreciate if anyone might know of, or be able to direct me to where I could find a copy of "A Training Handbook: Aikijujutsu Keiko Techo." An english edition was published in 1991 by the Takumakai. I found referrence to this book in "Conversations with Daito Ryu Masters" by Stanley Pranin which I just completed...
Welcome to AikiWeb.
If you're writing about the Keikio Techo that Mori Sensei talked about in his interview
with Aikido Journal, then you best course of action might be to contact Takumakai itself.
Online information can be found at http://www.asahi-net.or.jp/~DE6S-UMI/tkm01.htm
. You can email them and see if they have an English version for sale.
In the "Publications" section they have two listings for "The Takumakai Keiko Techo". Apparently there are primary and intermediate level versions.