found: NUCMC data from Harvard Univ., Houghton Libr. for Its Scope of total architecture collection, 1952-1956 (Harper, firm, publishers)
found: Exman, E. The House of Harper, 1967: p. 3 (J. & J. Harper, Printers; est. 1817) p. 14 (imprint changed to Harper & Brothers, 1833) p. 299 (Harper & Brothers merged with Row, Peterson & Company, of Evanston, Ill., 1962, and the firm name was changed to Harper & Row, Publishers, Incorporated)
found: LC database, 1-30-86 (hdg.: Harper, firm, publishers, New York) manual auth cd. (hdg.: Harper, firm, publishers, New York; predom. usage: Harper & Brothers)
found: The art museum comes to school, c1944: imprint on t.p. (Harper & Brothers Publishers)
found: Wikipedia, viewed Sept. 14, 2007: (Harper & Brothers) external links (The Harper Brothers, founders of Harper Brothers Publishing)