Republican Party history text resource.
Zak is a great guy, and wrote a good book on the GOP: "Back to Basics for the Republican Party," already in its third edition.
http://www.amazon.com/gp/product/0970006322/qid=1137946658/sr=2-1/ref=pd_bbs_b_2_1/104-5995734-8731113?s=books&v=glance&n=283155