Subject (Genre)
- Hearings37
- Legislative materials34
- Memorials and Petitions33
- Broadsides32
- Film excerpts29
- Motions and Resolutions29
- Printed waste (Binding)29
- Instructional films26
- Sources26
- Handbooks and manuals24
- Congressional addresses23
- Biography22
- Rules21
- Miscellanea20
- Government publications18
- Statistics18
- Speeches17
- Documentary films16
- Case studies15
- Short films15