"Pasadena at that time seemed an earthly paradise, with good science too. We had a
dip in the Pacific Ocean at Christmas . Although Pauling and I were at that
time rivals on the subject of valence bond theory, we had friendly relations with
the Pauling family: Linus and Ava Helen one day took us for a memorable expedition
into the desert." Robert Mulliken. Life of a Scientist, pg. 97. 1989.