| Washington Teasdale A Fossil 1880s (probably) Cyanotype 7.2 x 9.7 cm Museum of the History of Science Gabb Collection, Inventory Number: 99707, Accession Number: 1949-10 LL/93979 Cyanotype (blueprint) positive. A composite limestone fossil (a stone with many embedded shells etc.). The scale within the image (a six-inch ruler) bears Teasdale's masonic monogram and motto 'Spero Meliora'. Companion of 84273 and 91609.
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