There is an enormous resource of books about the Yucatan, the Maya and the colonial period. The short list that I include here does not even begin to uncover all of the resources available. Most, if not all, of the books can be obtained, new or used, through either:
There may be some books that are out of print and less easy to find, but the internet is an amazing place. Keep searching! I do not include publishers in the following list since some of the books have been reprinted by one or more publishers.