offers a Jaeger Lecoultre catalog as a download. It is a color scan. Its a lot later than 1935 and does not have covers or a table of contents but is has 181 pages. Teh scan is in color but I have not found any color pictures or diagrams.
The downlaod is password protected which is a further nuisance, but if you have full Acrobat you can make a password free copy and OCR it.
If you don't, you can send me the copy you buy and I'll do that for you via private message.