This is a vintage photograph, likely a carte de visite, featuring a portrait of a man identified as 'Steamboat Frank'. The man is positioned centrally, facing forward with a serious expression. He appears to be of African American descent. He is wearing a dark-colored jacket with a row of buttons down the front. Underneath, he wears a light-colored shirt with a high collar. The clothing suggests a working-class or military style. The photograph is oval-shaped and mounted on a slightly larger, off-white card. The card has decorative borders with text along the edges, indicating copyright information and the year 1873. Below the portrait, there is printed text that reads: 'STEAMBOAT FRANK'. Further down, there's a certification stating that L. Heller took the photograph of the above 'Modoc prisoner under my charge'. It's signed by Capt. C. B. Throcmorton, 4th U.S. Artillery, Officer of the Day, and Gen. Jeff. C. Davis, U.S.A., who attest to the fact. The photograph has a sepia tone, typical of older photographs, and shows signs of age and wear. The overall impression is a historical document capturing a portrait of a man identified as a prisoner during the Modoc War.