With a keen eye and fifty cents I netted this gem at a garage sale which only true geeks can appreciate:
The seller explained it's the programming guide for the vendor computer inside Speed Queen coin-operated washing machines back in the 1980s. The guide provides technicians with codes they can use to calibrate and test the machines, or reprogram the cost required per use:
It's also an historic collection of the first software Easter eggs:
1. Open and close the service door. 2. Press and hold NORMAL, then press HOT.Who would have guessed that Maytag repairmen were performing Nintendo game cheats 10 years before the system hit the market?
UPDATE - page 13, by request: