By the way, mathwonk, how would you compare the first volume "Introduction to Calculus and Analysis" (Courant and John) with "Calculus" (Spivak). Since you have taught out of the former (and I assume you are at least briefly familiar with Spivak), I would be interested in your analysis. Thanks!
While copying proofs or procedures out of a solutions manual is a poor way to learn mathematics, it is, I believe, beneficial to have a set of answers to check your final result against. I too would like to have a solution manual for Courant.