Dear All I somewhat recall that, a while ago, we discussed the origins of the notions of category and functor. S. Mac Lane had once pointed out to me these origins but from my recollections we did not entirely reproduce them. In his paper Samuel Eilenberg and Categories, JPAA 168 (2002), 127-131 Saunders Mac Lane clearly pointed out the origins: "Category" from Kant (which I had known all the time) "Functor" from Carnap's book "Logical Syntax of Language" (which I had forgotten). Also I have a question, not directly related to the above issue: I have seen, on some web page, a copy of the referee's report about the Eilenberg-Mac Lane paper where Eilenberg-Mac Lane spaces are introduced. I cannot find this web page (or the report) any more. Can anyone provide me with a hint where I can possibly find it? Many thanks in advance Johannes HUEBSCHMANN Johannes Professeur de Mathematiques USTL, UFR de Mathematiques UMR 8524 Laboratoire Paul Painleve F-59 655 Villeneuve d'Ascq Cedex France http://math.univ-lille1.fr/~huebschm TEL. (33) 3 20 43 41 97 (33) 3 20 43 42 33 (secretariat) (33) 3 20 43 48 50 (secretariat) Fax (33) 3 20 43 43 02 e-mail Johannes.Huebschmann@math.univ-lille1.fr