An open letter to Com. Vanderbilt.

MLA

Twain, Mark, Culture Class Collection (University of Pennsylvania) and American Culture Class Collection (University of Pennsylvania). An open letter to Com. Vanderbilt. New York : S.S. Packard, 1869.

APA

Twain, M., Culture Class Collection (University of Pennsylvania) & American Culture Class Collection (University of Pennsylvania). (1869). An open letter to Com. Vanderbilt. New York : S.S. Packard.

Chicago

Twain, Mark, Culture Class Collection (University of Pennsylvania) and American Culture Class Collection (University of Pennsylvania). An open letter to Com. Vanderbilt. New York : S.S. Packard, 1869.