Important Publication Series
There are several prominent series of publications from the U.S. Congress, including those from committees and from subsidiary sites.
The publisher ProQuest offers this list of types of publications.
Searching -- Commercial Sources (W&L Subscriptions)
A few commercial publishers have digitized large quantities of Congressional publications. Searching and access often are easier than with free sources, but use is limited to current members of the W&L community.
Official and free.
Searching -- Free Sources
These collections of Congressional documents are provided without-charge for all users by the Federal Government.
Online coverage generally begins with the early- to mid-1990's.
These nonpartisan agencies fall within the purview of the Congress and conduct extensive investigations and research on on the functioning of government.