In Spring 1969 there was a conference in Rome. In the resulting volume of Symposia Mathematica there appear papers by David Buchsbaum, Leon Ehrenpreis, Peter Freyd, John Gray, Ioan.James, Barry Mitchell and Graeme Segal. Talks also were given by Jean Benabou, Charles Ehresmann, Bill Lawvere and Saunders Mac Lane. (Among others in attendance -- I do not specifically recall if they gave talks -- were Yitz Herstein and John Moore.) Bill gave his first talk on elementary topoi. My talk was on the "more general" adjoint functor theorem (but the paper I put in the proceedings was on the concreteness of certain categories). Jean Benabou talked about distributors. During his talk I decided to wait until I could check with Bill before saying anything. In what I expected to be an entirely private conversation I then brought to Benabou's attention -- as gently as I have ever succeeded in being with an adult -- that in July, 1966, he and I had heard Bill give a talk in Oberwolfach in which Bill described a kind of "generalized functor" he called a "bimodule." Within two seconds it ceased being a private conversation. Nothing in my mathematical career had come close to preparing me -- or anyone else I knew at the conference -- for the scene that then occurred. Under the circumstances I decided not to take the opportunity to point out that at the lunch following Bill's 1966 talk many observed Benabou pressing him for more details about these generalized functors called bimodules; what good were they anyway; how would one use them. [For admin and other information see: http://www.mta.ca/~cat-dist/ ]