In his journal entry for April 23 Maximilian noted that a village of Kansas Indians had recently been located above Fort Leavenworth near the mouth of the Independence River. Bodmer made a quick sketch of the site that morning.

Bodmer's unfinished sketch of the prison at Pittsburgh, made during his brief stay in that city in September, 1832, furnished the basis for the aquatint designated as Vignette VI in the atlas that later accompanied the publication of Prince Maximilian's travels.