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- Caldas, Claudemiro Augusto de Moraes.1
- California State Woman's Hospital.1
- Chandler, Thomas H. (Thomas Henderson), 1824-18951
- Chauvenet, William, 1820-18701
- Chevalier, Sarah A., author1
- Citizens' Association of New York, author.1
- Clark, Henry G. (Henry Grafton), 1804?-18921
- Clark, Henry G. (Henry Grafton), 1804?-1892, author1
- Clement, Richard, active 1869, author1
- Clinico-Pathological Society of Washington, D.C.1
- Cochran, James, (Physician), author1
- Codman & Shurtleff.1
- Coles, Walter, 1839-1892 author1
- Columbia College (New York, N.Y.), author.1
- Cunha, Raymundo Caetano da.1
- Damon, Howard Franklin, 1833-18841
- Davis, Andrew Jackson, 1826-19101
- Dayfoot, Herbert M., author1
- De Gersdorff, B., author1