Description: [caption id="" align="aligncenter" width="421" caption="The Smithsonian Astrophysical Observatory (SAO) tested fabrics for the War Department during World War II at the Miami Solar Station, Miami, Florida, c. 1940-1945, by Unknown photographer, Photographic print, Smithsonian Institution Archives, Record Unit 7005, Box 187, Folder 5, Negative Number: 38154-A."][/caption]