Caption from Torch: "Theresa Davis of Hyattsville, who said she visits NASM frequently, was the Museum's five millionth visitor since its July 1 opening. She was greeted by David Challinor, assistant secretary for science (right), and Melvin Zisfein, deputy director of NASM."
Smithsonian Institution Archives, Record Unit 371, Box 02, Folder: February 1977, Image No. 76-19388-05
Smithsonian Institution Archives Capital Gallery, Suite 3000, MRC 507; 600 Maryland Avenue, SW; Washington, DC 20024-2520