His first booklet (#40) contain sketches of the Missouri frontier, the Mississippi, St. Paul, and Kaposia. The next four books (#41-44) contain sketches made at Fort Snelling, Traverse des Sioux, and Mendota. They provide a visual record of Native American life of the era, particularly among the Eastern Dakota (Sioux). There are also sketches of voyageurs and the usage of both dugout and bark canoes.
Page 17 of sketchbook #41 features an image simply labelled "Canoe Paddle"which features slightly recurved shoulders, thick shaft, distinct spine running the full length of the blade and ending in a slightly pointed tip....
Page 30 of the same sketchbook features another example of a Dakota warrior holding onto a paddle with recurved shoulders and pointed tip. The caption states, "Drawn near Fort Snelling".