A subject that is of recurring interest to our patrons is how to find congressional voting records (also called roll call information). This topic presents more challenges than may be readily apparent because researchers must not only determine what resources cover the period of time in which the laws at issue were passed, but also whether that resource is available in a paper-based or freely available digital format.

As the availability of these resources is very date-specific, we have divided them into three main “eras” of data collection:

• 1774 to 1875
• 1876 to 1988
• 1989 to present