17 Neuzugänge
zu den Filteroptionen- Washington, D. C. : Gov. Print. Off., 1898
- Washington : Weather Bureau, 1893
- Washington, DC : Weather Bureau, 1893
- prepared under the direction of W. B. HazenWashington : Gov. Print. Off., 1884
- Washington : Light-Hous Board, 1894
- Washington : Navy Dept., 1891
- Washington, DC : Gibson, 1892