Box 1
Business and Professional Correspondence, 1870-1875
Box 1
Business and Professional Correspondence, 1890-1899
Box 1
Columbia Correspondence, 1894-1898
With School of Mines alumni
Box 1
Family Correspondence, 1855-1859
Box 1
Family Correspondence, 1860-1869
Box 1
Family Correspondence, 1870-1875, 2 folders
Box 1
Family Correspondence, 1890-1896
Box 1
Personal Correspondence, 1865-1875
Box 1
Smith, Horatio Southgate--Incoming correspondence, 1837-1844, 4 folders
With summary of contents, 1837-1839.
Box 1
Miscellaneous