%0 Journal Article %T Philadelphia's Philosopher Mechanics: A History of the Franklin Institute, 1824–1863. By Bruce Sinclair. (Baltimore: Johns Hopkins University Press, 1974. 353 pp. Illustrations, notes, bibliography, and index. $15.00.) %A Calhoun,, Daniel %J Journal of American History %V 62 %N 3 %P 692-693 %@ 0021-8723 %D 1975-12-01 %I Oxford University Press %~ DeepDyve