1. Smithson Institution –
1852 – 1874
2. Alexandria, VA – 1849,
1853 – 1858 (Benjamin Hallowell)
3. Bladensburg, MD – 1854
– 1864 (Benjamin O. Loundes)
4. Washington D.C. – 1857
– 1858 (J. Wiessner)*
5. Georgetown – 1860 –
1863 (Reverend C.B. McKee)
6. Agricultural
College (College Park, MD) – 1861 – 1862 (Dr.
Montgomery Johns)