Mr. Weissman. There was stimulation.
Senator Cooper. From whom?
Mr. Weissman. I assume from the Birch Society. In other words, I think the idea for the ad, for the something to do on the occasion of President Kennedy's visit—I think the idea for the something to do came from the Birch Society—whether Mr. Joe Grinnan or someone else, I don't know.
Senator Cooper. Was it communicated as an idea to you?
Mr. Weissman. Larrie communicated the idea to me, said what do you think. I said, why not?
Senator Cooper. Which one of this group did the idea come to?
Mr. Weissman. I don't know.
Senator Cooper. It didn't come to you?
Mr. Weissman. No; it didn't come to me personally originally, no.
Mr. Dulles. What is the basis of your evidence of saying this was the Birch Society? How did you know that? Where did you get that?