In much of her output before the late 1960s, Frank seems less interested in color than in tonality and texture, often employing the grayscale to create a sense of depth or motion from light to dark, this frequently moving in a diagonal (as in "Winter's End", 1958), and otherwise employing one basic hue (as with the earthy reds in "Plum Point", 1964). However, the later, "windowed" paintings show a sharper interest in vivid color relationships: indeed, Yoseloff (p. 20) notes that with the later paintings "she has gone to bolder colors". This is especially true, as he notes, in the "aerial" paintings, of which an early and monumental example is "Aerial View no. 1" (1968, 60 inches by 84 inches, collection of the Turner Auditorium complex at the Johns Hopkins School of Medicine, Johns Hopkins University). This was one of the artist's favorites, according to "Baltimore County Women" below.