Issue 4 (April 1931)

  1. Journal of the Society of Motion Picture Engineers — Cover InformationOpen access
  2. Journal of the Society of Motion Picture Engineers — Table of Contents InformationOpen access
  3. The Talking Film Original Research
  4. Sound and Speech in Silent Pictures Original Research
  5. Effect of the Water Supply in Processing Motion Picture Film Original Research
  6. The World's Most Powerful Microscope Original Research
  7. Visual Aids in Teaching Original Research
  8. List of Members InformationOpen access
  9. Committee Activities InformationOpen access
  10. Abstracts InformationOpen access
  11. Abstracts of Recent U. S. Patents InformationOpen access
  12. “Visual Aids in Education” (J. J. Weber; 1930) [Book Reviews] InformationOpen access
  13. “Television” (H. Horton Sheldon; 1929) [Book Reviews] InformationOpen access
  14. Society of Motion Picture Engineers: Officers 1930–1931 InformationOpen access
  15. Committees 1930–1931 InformationOpen access
  16. Committee Chairmen InformationOpen access
  17. Contributors to this Issue InformationOpen access
  18. Society Announcements InformationOpen access