H. C. Grinnell

18 public-domain plates in the archive

• Pleurobema cordatum
• Potamilus purpuratus 10 Jul 1938
• Carunculina parva
• Lampsilis teres
• Quadrula pustulosa
• Uniomerus tetralasmus
• Uniomerus tetralasmus
• Quadrula quadrula 24 Aug 1939
• Strophitus undulatus 14 Apr 1939
• Strophitus undulatus 3 Nov 1939
• Uniomerus tetralasmus 18 Aug 1939
• Potamilus laevissimus 10 Jul 1936
• Ligumia recta 14 Apr 1940
• Strophitus undulatus
• Uniomerus tetralasmus 18 Aug 1939
• Carunculina parva
• Quadrula quadrula 14 Apr 1940
• Uniomerus tetralasmus 14 Aug 1939