10 shells of varied shapes and colors, numbered "Fig. 514" through "Fig. 523". Original from the Minneapolis Institute of… https://www.rawpixel.com/image/7652722/image-plant-vintage-artFree Image from public domain license23 shells, mostly of conical or bulbous shapes and varied colors; long red and white conical shell at center; numbered "Fig.… https://www.rawpixel.com/image/7652470/image-vintage-art-logoFree Image from public domain licensebrown mussel at right, rust-reddish mussel at left, numbered "Fig. 773" and "Fig. 774". Original from the Minneapolis… https://www.rawpixel.com/image/7652472/image-vintage-art-public-domainFree Image from public domain license