Appears in exhibition catalog as entry no. [not numbered]
"On the Shenandoah," by Knapp. The property of Mr. Osborne. An autumn scene, truthfully painted, full of genuine love for nature. The work of a promising artist. [P. 67; exhibited under heading: "Water-Colors."]
Ninth Annual Report of the Saint Louis Agricultural and Mechanical Association. Prepared for Publication by Maj. Geo. W. Gilson. St. Louis: Missouri Democrat Book and Job Printing House. 1871.