Sensitometry, by Hollis N. Todd and Richard D. Zakia (spiral notebook, 1962, $5, which is 1/3 the internet price.)
Todd and Zakia, the authors, taught at the Rochester Institute of Technology.
"Sensitometry is concerned with the relationships between the silver (or other) deposits or impressions formed in a photographic image and the factors of exposure and processing to which the emulsion is subjected. Emphasis is placed on the methods and limitations of experimentation and instrumentation. An introduction to statistical methods of data handling provides a basis for applications of these methods to specific problems.
If anyone understands any of that last paragraph, you can call us (me) and explain it to us (me). Even one of our volunteers , who worked for Kodak, couldn't explain it to us in laymen's language. (And one of the authors was a relative, if only distantly.) (Not that that is an important point. I just thought I would throw it in.)
Look for this notebook in the local section.