Scientific American is part of Springer Nature, which owns or has commercial relations with thousands of scientific publications (many of them can be found at www ...
IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. overall: 5 1/2 in x 12 in x 6 1/8 in; ...
Andrew Troyer was teaching in his Amish settlement's school in Wayne County, Ohio, in 1977 when his pupils began relaying orders for rope. Troyer had brought his handmade, hand-twisting machine to ...