Drawing related to a trial excavation undertook by Ernst Herzfeld in the Summer 1928 as well as a campaign of excavation at the western mound, Tall-i-Bakun A under the auspice of the Oriental Institute of the University of Chicago, carried out by Alexander Langsdorff under Ernst Herzfeld's direction between March 25, 1932 and July 21, 1932.
Finding aid available in the Archives Department and on Internet http://www.asia.si.edu/archives/finding_aids/herzfeld.html#series5
Drawings are arranged roughly in sequential number sequences, housed in document boxes or in flat file folders by size, and stored in the map case drawers
Original caption on verso reads, "XXV. D-492 [is numbered] 2106."
The Ernst Herzfeld papers. Freer Gallery of Art and Arthur M. Sackler Gallery Archives. Smithsonian Institution, Washington, D.C
Map case drawers Drawer 28
Smithsonian Institution, Freer Gallery of Art and Arthur M. Sackler Gallery Archives, 1050 Independence Avenue, S.W., Washington, DC 20013-7012