McGill Library
McLennan Library Building3459 rue McTavish
Montreal, Quebec
H3A 0C9
Robert Knebel
File
Textual records.
Correspondence between Dr. Cone and Knebel Electro-Optical Instruments, concerning the development of a “stereo camera” for Montreal Neurological Institute (includes discussion about other matters pertaining to technical queries by Dr. Cone). Correspondence between Dr. Cone and Charles Hodge concerning technical problems with photographic equipment.