An Introduction to the Commodore 64: Adventures in Programming: Scrimshaw, N.B.: 9781489967893: Amazon.com: Books
Commodore 64 Sketch and Design: A workbook for designing sprites, custom characters, and screens on the C64: Lavoie, Tony: 9798644618002: Amazon.com: Books
Commodore 64/128: AMAZON - C64 Original disk - Actually TESTED - Trillium | eBay