For me, some of the most interesting of this time period are Richard Neutra, John Lautner, Hal Levitt, Buff and Hensman, and Alvar Aalto. Locally I love Harwood Taylor and Howard Barnstone. My personal favorite is R.M. Schindler Good taste! Bunshaft especially! The Georgica Pond House (now gone) was incredible. Lever House is my favorite high-rise in the U.S.