I have seen several references to an unpublished 1973 manuscript by Jean Benabou on profunctors. I have had no success finding an e-mail address for Prof. Benabou. Does he have one? Peter Johnstone has a very nice synopsis of the subject in his new book in section B 2.7. Francis Borceux has a more elementary treatment of distributors in the first volume of his handbook of categorical algebra. Are there other sources which offer a substantial discussion of profunctors? I would be happy to pay duplication and mailing costs to obtain a copy of the Benabou paper. Thanks for any information you can provide. Carl Futia