I've read/researched quite a bit about this. What would you like to know?

Books:

The Hammer Conspiracies by Frank A. Aloi (expensive as hell but well worth it)

The Company She Keeps by Georgia Durante (get the paperback which has photos)

Video:

http://rochesterhomepage.net/fulltext?nxd_id=261257
http://rochesterhomepage.net/fulltext/?nxd_id=261247
http://rochesterhomepage.net/fulltext/?nxd_id=261237