Editor: I was led to believe that you were in the UK, are you not? If not then maybe you ARE unaware but AI was founded by 2 people, both communists, Peter Benenson and Alec Digges. Together the two had taken over the International Birgade Association in 1958, and then founded AI in 61 with their pal from the Observer.
As for HRW, the primary man behind that organisation was Robert Bernstein who began to form the organisation after a 73 trip to the USSR. He finally registered the group in 78 as "Helsinki Watch" which was supposed to be monitoring the Soviet's compliance with Helsinki but was actually described in declassified Soviet documents as an Agitprop front. Agitprop, for those that do not know, is the English translation of a Soviet era Russian word used to describe elements in the propaganda arm of Soviet Intel.
I would have thought that you would know these things. I understand the eternal malcontents asking for a source because that is what they do but the two organisations are so well known, as are their histories that I would have thought the subject passe.