Robert Indiana kept a series of illustrated journals during the late 1950s and 1960s, in which he discusses the development of his work.
Indiana's journal page from April 20, 1961, includes a color sketch of the sculpture Womb. A note to the right of the sculpture highlights the work's haunched tenon. Below the sketch are the work's title, country of origin, date, and dimensions: WOMB • USA • 1960 • 44 ½“ x 13". Below this Indiana records that his work was not returned that day (from the Indiana / Forakis show at the David Anderson Gallery).