If some of those are old tube manuals, they tend to be pretty collectable and can sell well. Maybe check out E-bay for prices?
Lefty, you have the Eagle spec. eye.. what's the best low-cost single supply, rail-to-rail opamp, 8-pin or 16 pin DIP?? There must be some recent goodies.
So many to choose from, I couldn't recommend anything specific, just go with price and avaliblity. My real fear is anything in the 'recent goodies' catagory will not be avalible in DIP package
Thought you were going to put some voltage regulators in there?
My favourite IC is the I2C 4-channel true colour Avago ADJD-S371 / ADJD-S311 sensor.
i'd have to learn how to implement op amps and comparators