Hi John, Moss Sweedler and I once tried to collect some of the facts on generators and cogenerators for Hopf algebras and the like in On Generators and Cogenerators. (with M. Sweedler) Manuscr. Math. 2 (49-66) 1970. Best wishes (from Oceanside) Bodo -- Prof. emer. Dr. Bodo Pareigis Dept. of Mathematics University of Munich pareigis@math.lmu.de [For admin and other information see: http://www.mta.ca/~cat-dist/ ]