Feinberg is Rabbi Emeritus of Holy Blossom Temple and the National Vice-Chairman of the Canadian Campaign for Nuclear Disarmament. Feinberg informs BR of the anti-Semitic hate literature that is being distributed in Canada, and comments that "it is obvious that the international extreme right is attempting to establish a focal beach-head in Canada." Feinberg encloses the pamphlet entitled The Red Rabbi (document .177277), for BR's viewing.

At the foot of the letter Feinberg has written, in ink, a two paragraph note to BR. The handwritten note outlines Feinberg's participation in the Conference on Disarmament and Peace that took place on 14 to 16 September 1961. Feinberg tells BR that his essay "Free Man's Worship" "has been the most powerful influence on my thinking".

At the top left-hand corner of the letter: "Shd. write to that man of peace Pearson about this—and to Canadian government".