Commodore VIC 20: a visual history
Giacomo Vernoni made a book with high quality pictures of the VIC 20, peripherals and Commodore games on cartridge. A few examples are: VIC 1001, VIC 20 (PAL/NTSC), VIC 1010, VIC 1020, VICmodem, VIC 1515, VIC 1525, VIC 1540, VIC 1541, C2N, 1530, paddles, joysticks, boxes and cartridges.