The number "571" in white ink appears on recto in what may be the hand of Antoin Sevruguin. The same number in the same location appears on the glass negative of this image located in the Freer Gallery of Art and Arthur M. Sackler Gallery Archives of the Smithsonian Institution.
Page 305 of “Persia Past and Present” by A.V. Williams Jackson which was published by The Macmillan Company in London in 1906. The print is attributed to Antoin Sevruguin and titled “Rock-hewn fire alters at Naksh-i Rustam”.
A glass negative of this image is in the Myron Bement Smith collection of Antoin Sevruguin photographs located in the Freer Gallery of Art and Arthur M. Sackler Gallery Archives, Smithsonian Institution, Washington D.C. The negative was a gift of Katherine Dennis Smith, 1973-1985 and has the reference number FSA A.4 2.12.GN.35.08.