Online (Yale subscription) U.S. Congressional Serial Set, Digitization in process by Readex; for current years of coverage, check the upper right corner of the search screen. Earlier Congressional documents can be found in the Readex database American State Papers, 1789-1838.
1935-2002: Paper Contact the GDIC with the document or report citation (Senate or House, document or report number, number and session of Congress, date) to request the corresponding Serial Set volume.
Example (from LexisNexis Congressional®):
TITLE: Gooding, John, and James Williams
CIS-NO: 40 H.rp.1
DOC-TYPE: Serial Set Collection
DOC-NO: H.rp.1, 16-1
SERIAL-VOL-NO: 40
SESSIONAL-VOL-NO: 1
CONG-SESS: 16-1
SESSION-DATE: 1819, 1820
CONGRESS: 16