Letter : Fort Mason, Tex., to Samuel Cooper, Washington, D.C.
MLA
Thomas, George H. (George Henry), 1816-1870. Letter : Fort Mason, Tex., to Samuel Cooper, Washington, D.C.. 1857 Jul 7. https://collections.library.yale.edu/catalog/17259410.
APA, 6th edition
Thomas, George H. (George Henry), 1816-1870. (1857 Jul 7)[Letter : Fort Mason, Tex., to Samuel Cooper, Washington, D.C.]. https://collections.library.yale.edu/catalog/17259410.