Robert Indiana kept a series of illustrated journals during the late 1950s and 1960s, in which he discusses the development of his work as well as his daily life on Coenties Slip.

In his journal entry for February 4, 1962, Indiana records that J. (his partner, fashion designer John Kloss) helped him again on his Polygon series, "designing [the] 4, 5, 7, 10, 11 and 12 [to] complete [this] aspect of [the] series." He notes that it was a warmish day, so he went up to the roof to fix his skylight, but was interrupted by a call from Campbell Wylly (misspelled as Wiley), who asked if he could drop by with collector Richard Brown Baker, in order to select a construction for his next sculpture show (in the Museum of Modern Art's Penthouse). Indiana writes that Baker: "was in a more receptive mood [this] visit around—not [that] he bought anything (owning two each of Dick Smith and Rosenquist), but he did hit on 'Nonending Nonagon' for himself, which is, of course, part of [the] series going [to] David Anderson."

Indiana records that it was "a relaxed, cordial visit" that stretched into several drinks and dinner. He notes that the visit ended with Baker taking an Eat drawing, but that he "couldn’t pay for it because of his $11 bank balance," and a walk out on Jack's pier.