I have found a new way to find wonderful zen books. I use abebooks.com (my favorite site for buying books although one person on treeleaf had a bad experience with their first book). Anyway, it is a good place to find out about books. So I have been noticing that many fine and rare zen books have been published by the University of Hawaii. So I went to abebooks.com, went to the "advanced search page", entered zen as the subject word and University of Hawaii as the publisher, then changed "sort by lowest price" to sort by "title A-Z" and pushed "find book". There is some amazing stuff out there, rare translations of Indian, Chinese, Korean, Japanese texts. There is even a translation of a Vietnamese Medieval text! (how cool is that!). Anyway, interlibrary loan is your friend for those in the US......
I plan to check "Oxford University Press" and would appreciate suggestions for other publishers.
While it is true that enlightenment can not be found outside ourselves (which seems self-evident since I am not capable of being outside myself), reading other people's understanding can be a very broadening experience (and Goddess knows my consciousness can ALWAYS use to be broadened).