1956 "A-466" T-Flite Training Book !
Interesting find here ... a link-to the site of an Upload of an original , 1956 Factory Training Book for the then-new "A-466" TorqueFlite !
From what I've gathered , it appears that the engineering designation catalogue number changed to "A-488" for 1958 , following some internal upgrades .
ENJOY !
http://www.ch300imp.com/tqf-intro.htm