Yes, the Model 64 had its own instructions that were so labeled.  These were the older “card style” instructions (as opposed to the later “picture style” for certain models).  I think the content was the same as for the Model 94.  I am referring here to the Pre-64 rifles.  The re-introduced version of the M64 made in 1972-1973 had different instructions than the Pre-64 version.  Are you aware of the differences?