the manuscript of Mar Keshisha, which is a dictionary of the terminology and methodology of the Talmud, in the widest sense of the word. It can be boldly averred that seldom has a collection of material for any branch of knowledge been attempted in such magnitude, and with such comprehensive observation of all facts connected there with as in this one.)
(There seems to be a recent BA thesis on the CY with the provocative title -
Joseph Scherban, "Rabbi Yair Chaim Bachrach: The Life and Thought of a 17th century Jewish Skeptic," (BA thesis, University of Pennsylvania, 2008), under the tutelage of Prof. David B. Ruderman
R' Kook's quasi-biography of his great father-in-law is available online here. There is a famous story (see Moadei HaReiyah) according to which an American priest was so very taken by the descripton of the Aderet in Adar Yakar that he converted to Judaism and moved to Israel with the special intent of translating the sefer so it be more widely know.
There is an excellent bibliography of all of the Aderet's seforim (piblished and not yet (I hope!) published) in the introduction to Sheves Achim. The seforim are published by R' Yaakov Hille's Ahavas Shalom and they are doing a fanstastic job (like all of their work). יישר חילם לאורייתא
[and see this thread- http://www.bhol.co.il/forum/topic.asp?whichpage=1&topic_id=2424718&forum_id=19616]