Annan was known to have photographed in Athens in the early twenties, but this may be one of the very few surviving images.
Gernsheim, Helmut, and Alison Gernsheim. L.j.m. Daguerre (1787-1851): The World’s First Photographer. Cleveland: World Pub. Co, 1956. pl. 50
Newhall, Beaumont. The History of Photography: From 1839 to the Present. , 2012. p. 28.
Leonardi, Nicoletta, and Simone Natale. Photography and Other Media in the Nineteenth Century. University Park, Pa: The Pennsylvania State University Press, 2018. no. 8.2.
Bernard Quaritch Catalogue 1341, no. 103