It is interesting to see the stylistic evolution of the carvings over the years. The first few, starting at the upper left with Rich Green as Ph.D. #1 in 1978, were somewhat tentative. Indeed, until Paul received tenure, the carvings were hidden behind a file card lest the powers-that-be look askance at the defacing of University property! Then, the carvings became bolder, although they remained remarkably uniform in style. By the late '80's, when the initials moved to the right of the window, more individualism emerged, with each Ph.D. finding a way to personalize his or her initials to reflect artistic interests, national origins, and/or group nicknames.