Keywords: FMIB 47853 Valve of Unio in its Natural State, and the same with 'blanks' cut out from it Blanks as cut; three upper figures showing inside.jpeg check categories 21 August 2015 4 Valve of Unio in its Natural State and the same with 'blanks' cut out from it Blanks as cut; three upper figures showing inside three lower showing outside with or or less of the epidermis The same ground but not 'centered' or polished The same centered i e with the central depression made but not the holes The same with the holes drilled complete A dozen buttons as fastened on card for sale Subject Buttons Pearl button industry Unio Freshwater mussels Tag Shellfish 1898 00 Cite book Fresh-Water Pearls and Pearl Fisheries of the United States Kunz George F Washington DC Government Printing Office 1898 Bulletin of the United States Fish Commission vol 17 1897 Plate IX Creator George Frederick Kunz PD-UWASH-FMIB Institution University of Washington FMIB-source accession number 47853 Images from the Freshwater and Marine Image Bank to check George Frederick Kunz Buttons Unio Shell buttons |