Cornell University Library Digital Collections
- Grove, W. B. 1848-1938.3
- Wolf, Frederick A. b. 1885.3
- Bary, A. de 1831-1888.1
- Harshberger, John W. 1869-1929.1
- Hartig, Robert, 1839-1901.1
- Milburn, Thomas, 1874-1
- Stevens, Frank Lincoln, 1871-1
- Stevens, Frank Lincoln, 1871-1934.1
- Tubeuf, Karl, (as freiherr von,) 1862-1941.1
