Catherine, it doesn't say, but I think theres a copyright of 1971.mIts a grey pamphlet with 23 pages. The title is 'A programed instruction manual".
Its nothing like our manuals for the 150/15s's. It maybe a test booklet, cause questions are asked..probably not of any use to a already owner of the aircraft..
in fact as Im looking at it,it is some sort of training aid..
do you have a 140?