For many years, Bill Jorgensen and Lional Salem's Organic Chemist's Book ofOrbitals was the standard work on qualitative MO-theory in Erlangen. It provided the basic principles as weH as MO-plots of exactly the orbitals that we needed to understand the effects that we were investigating. How- ever, 25 years after its publication, the Organic Chemist's Book of Orbitals is essentiaHy unknown to the current generation of chemistry students, although...