Paul, The older JC Whitney catalogs are cheap pulp paper with sometimes tiny print. I will attach a scan of the 1958 PTO page , but the file size may not be easy to read. The section on PTO's was 1 major page, and another adjoining page had other truck transmission info (like devices for converting 3 speed to 4 speed). You can also possibly search the interwebs for any PDF versions of older JCWhits that someone may have scanned and posted. The fleabay will oft have some 1950's -1960' JCWhits for sale. Finally, search fleabay and other sources for ARROW or SPICER 1950's-60's documents as they had a lot to do with PTO's on transmissions. Good Luck with your search!
