See the grid lines drawn on this photo? That’s because it was used as a study for the painting The Arch of Titus (1871), by G.P.A. Healy, Frederic Edwin Church, and Jervis McEntee. You can compare it with the finished painting here.
Henry Wadsworth Longfellow and his daughter, Edith, ca. 1868 / G. P. A. (George Peter Alexander) Healy, photographer. Research material on George Peter Alexander Healy, Archives of American Art, Smithsonian Institution.