Description: Original rare United Motors Service (Delco-GM) auto radio service manual for the 1941 Buicks. Models include: Special, Super, Century, Roadmaster, and Limited. Includes convertible, hardtop, coupe, sedan, and station wagon models. This one is for radio model number 980650. Measures 8.5"x11" and has 6 pages including a revision sheet. Pages are loose. Bulletin number 6D-918 and dated 12/2/46. This manual contains alignment instructions, wiring diagrams/schematic drawings, parts layout diagrams, parts list and descriptions. The model number of your radio is on the unit. Very good condition. Shows slight handling and storage age.