Incoming Resources
- Computer Microfilm International Corp., Arlington, Va., 1973
- PBS Home Video, Arlington, Va., c2006
- PBS Distribution, Arlington, Va., 2023
- PBS Distribution, Arlington, Va., 2012
- PBS Distribution, Arlington, Va., 2013
- WGBH Educational Foundation, PBS Distribution, Boston, Arlington, Va., c2013
- PBS Home Video, Arlington, Va., c2008
- NSTA Press, Arlington, Va., c2007
- PBS Distribution, Arlington, Va., 2018