Title
- The Billboard 1923-02-17: Vol 35 Iss 749
- The Billboard 1923-12-22: Vol 35 Iss 1749
- Motion pictures in education : a practical handbook for users of visual aids48
- Newton's lantern slide catalogue48
- The Billboard 1913-06-21: Vol 25 Iss 2548
- The Billboard 1919-11-29: Vol 31 Iss 4848
- The Billboard 1920-01-10: Vol 32 Iss 248
- The Billboard 1920-02-07: Vol 32 Iss 648
- The Billboard 1920-07-17: Vol 32 Iss 2948
- The Billboard 1920-10-16: Vol 32 Iss 4248
- The Billboard 1920-10-23: Vol 32 Iss 4348
- The Billboard 1921-05-07: Vol 33 Iss 1948
- The Billboard 1921-11-12: Vol 33 Iss 4648
- The Billboard 1921-11-26: Vol 33 Iss 4848
- The Billboard 1922-02-04: Vol 34 Iss 548
- The Billboard 1922-03-25: Vol 34 Iss 1248
- The Billboard 1922-04-15: Vol 34 Iss 1548
- The Billboard 1922-11-04: Vol 34 Iss 4448
- The Billboard 1923-04-14: Vol 35 Iss 1548
- The Billboard 1923-05-05: Vol 35 Iss 1848