Keywords: FMIB 38309 Illustrating theoretically correct use of shell for small blanks.jpeg check categories 26 August 2015 2 Illustrating theoretically correct use of shell for small blanks Subject Shells--Industry and trade Pearl button industry Pearl button industry Tag Shellfish 1921 Cite book Fresh-water Mussels and Mussel Industries of the United States Coker Robert E Washington DC Government Printing Office 1921 Bulletin of the United States Bureau of Fisheries vol 36 1917-1918 Plate XLVI-2 Creator Robert Ervin Coker PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 38309 Images from the Freshwater and Marine Image Bank to check Robert Ervin Coker Shell buttons |