Reference
- 1947 . Engineering and Scientific Charts for Lantern Slides , Vol. 15 , 1 American Standards Association Publication .
- Guide to Speakers: American Institute of Chemical Engineers 120 New York, NY East 41st Street
- 1949 . Preparation of Effective Lantern Slides: L. S. Bonnell (Esso Laboratories—Standard Oil Development Co., Elizabeth, N.J.) . Chemical Engineering News , 27 September 12 : 2600