Well it is a little hard to summarize by individual books right now they are from a company I worked for. Most are 1960 or newer. D6H newer d7g, d8h, d9g/h, d10n/r. We had a fairly complete cat line with some John Deere, Hitachi, Case, Versatile, Tampo, Bomag, Dynapac, and many others. I worked for them for 10 years and know the books fairly well. There are some performance handbooks and even some books for a Fiat Allis HD41B.. just a look.