In September 1997 we needed a book on Category Theory for our first year undergraduate class in the B.A. (Mod) honors degree in Information and Communications Technology (ICT) at the University of Dublin, Trinity College, Dublin 2, Ireland. This book was at that time the only one that satisfied our requirements. Now we have chosen (Lawvere and Schanuel 1997) in addition. It is our opinion that one ought to start with the latter, a most excellent introduction of great profundity, and, for application to computing, use the Walters text. It is hard to beat this combination for a first year undergraduate course, as far as we know at this time (Sept.98)