Columbia subject headings:
United States--History--Civil War, 1861-1865--Regimental histories--Maine.
United States--History--Civil War, 1861-1865--Regimental histories--Washington (D.C.)
United States. Army. District of Columbia Cavalry Regiment, 1st (1863-1864)
United States. Army. Maine Cavalry Regiment, 1st (1861-1865)
Harvard subject headings:
United States--History--Civil War, 1861-1865--Regimental histories.
United States. Army. District of Columbia Cavalry Regiment, 1st (1863-1864)
United States. Army. Maine Cavalry Regiment, 1st (1861-1865)
Princeton subject headings:
District of Columbia Cavalry. 1st Regt--1863-1864.
United States--History--Civil War, 1861-1865--Regimental histories--D.C. Cav.--1st.
United States--History--Civil War, 1861-1865--Regimental histories--Maine cavalry, 1st.
United States. Army. Maine Cavalry Regiment, 1st (1861-1865)