This is a very nice set of IBM Course Books on Basic Computer Systems Principles. It is from 1964, the very early days, and this was IBM's attempt to make the education of computers available to the public. It is a 5-piece set, with Volumes 1,2, and 3, along with the examinations, and notebook. They are all in pretty nice condition, with some wear to the outside, slight dirt from lying about, but overall, very tight and clean. There is some yellowing from 60 years. The books have no rips, tears, or writing. The only damage is to the examination book on the bound edge at the staples, but all still good.