Annals of America. E 173 .A15 1994 (Ref)
This is the most comprehensive set of primary source documents for U.S. history prior to 1968. Over 2,000 documents are reproduced in this multi-volume set arranged in chronological order from 1493 to 1968. The various indexes are a gold mine of information about U.S. history.
Engrossed copy at the National Archives; rough draft at the Library of Congress.