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. 

This journal page covers July 28–29, 1963. In his first entry, for July 28, Indiana describes a visit by a young Frenchman "[that] Andy Warhol had been taken by," who was interviewing younger New York painters. He writes: "It is his attitude [that] [the] most can be learned about a country from its artists, and he is intent on knowing more about America."

Indiana notes that it was "a fairly pleasant visit," with the interviewer taken by his loft, and photographing it, his work, and himself.

In his entry for July 29, Indiana records that he received a postcard from his friend Marshyle, and a letter from Jan van der Marck, curator at the Walker Art Center, who was "in need of things for his September 1 deadline" (for the Richard Stankiewicz, Robert Indiana: An Exhibition of Recent Sculptures and Paintings exhibition). He writes that Gerald Laing (who was his studio assistant at the time) re-erected the wall on J's (his former partner, fashion designer John Kloss) floor: "using three pieces of plywood [that] came originally from Youngerman’s building, and were on occasion two different sets of my own paintings, now mercifully and opportunely destroyed."

Indiana then notes working on the "Diamond Demuth Five" (The Demuth Five) which was purchased by Mr. and Mrs. Robert C. Scull, applying the final coat of grays to the painting, and having to repaint the background because of sweat marks from his arm.  He also describes an evening at Café Le Metro to take in a poetry reading by Warhol.