To anyone with knowledge to share: I am searching for 'definitive' sources regarding the memo which Trowbridge Ford claimed to discover indicating that Jack Rubenstein of Chicago should be excused from public testimony before the HUAC in 1947 because he was acting as an informant for then congressman Richard Nixon. I am familiar with the Roger Stone story which tied Ruby to Nixon through Murray Chotiner, but I am not sure of Mr Stone's veracity.
In my mind, I have always been fascinated with the connections between Watergate and Dallas through Hunt, Sturgis, Barker, and others. I cannot believe in that many coincidences. However, I am interested in any material, should it exist, which could shed further light on the subject, and I would appreciate any assistance which may lead to further evidence.