I have several original Mopar service training manuals from a small-town Dodge dealer that closed in the early 1980's. They're in excellent nearly-unused condition. Here's the list:
1979 1980 Dodge Colt Plymouth Champ Air Conditioning Service Manual Supplement
1981 K-Car Service Highlights (Aries and Reliant)
1978 "Road Ready" New Vehicle Preparation Manual (Dodge Omni and Plymouth Horizon) 2 available
1971-1979 Parts Application Guide for Mitsubishi Import Engines and Carburetors (D50, Colt, Arrow, Challenger, Champ, Sapporo)
1978 Dodge Omni Plymouth Horizon Service Training Manuals (3 volume set)
1978 Service Highlights (domestic passenger car and truck)
1978 Service Highlights (Arrow, Sapporo, Colt, Challenger)
1980 Features and Service Preview (Dodge, Chrysler, Plymouth, Mitsubishi)
Using the Infra-Red Analyzer as a Diagnostic Tool (undated, probably early 1980's)
Any manual above is $20.00 postpaid by Media Mail in the lower 48 states except the Omni/Horizon 3-volume set which is $30.00.
If you have any questions please let me know. Best contact is by Moparts PM.