Columbia subject headings:
Depository libraries--United States--Automation--Congresses.
Government information--United States--Congresses.
Government publications--United States--Congresses.
Information storage and retrieval systems--Government publications--Congresses.
Libraries--Special collections--Government publications--Congresses.
Library science--Technological innovations--Congresses.
Harvard subject headings:
Princeton subject headings:
Depository libraries--United States--Automation--Congresses.
Government information--United States--Congresses.
Government publications--United States--Congresses.
Information storage and retrieval systems--Government publications--Congresses.
Libraries--Special collections--Government publications--Congresses.