Photo shows Peto standing in a parlor by a music stand, with a trumpet under his arm.
John Frederick Peto at age 25 in a music lesson, 1878 Jan. 30 / George & William H. Rau (Philadelphia, Pa.), photographer. John Frederick Peto and Peto family papers, circa 1850-1983. Archives of American Art, Smithsonian Institution.
U.S. public domain
Archives of American Art, Smithsonian Institution Washington, D.C. 20560