Evan,
In the biography (1995) by Peter Hamilton - Robert Doisneau - A Photographers Life, page 364 includes an extract from a former book by Doisneau on the Loire (1978-79) where he was asked to write a description of the technical aspects of his work. It runs to nine paragraphs the first eight pretty much tongue in cheek however the last paragraph gives this:
"Speaking of the camera bag, I don't have much space left to tell you about the contents. Two well worn Nikons, one for black and white, the other for colour. Four lenses: 105-50-35 and a 28mm shift. Some Tri-X film, some Kodachrome 25, two Ekta H.S. [Kodak High Speed Ektachrome] and Ekta X 64 [Kodak Ektachrome-X]. Four glass filters:K -1A - 81A - 85B, a half dozen gelatin filters. It's not much but heavy enough, particularly in the evening. The black and white were developed in Microdol X, fourteen minutes at twenty degrees or in D76, nine minutes at twenty degrees. Prints were on Kodabrom paper, Dektol developer, the enlarger an Omega in good condition.
Now you know everything"
The biography gives a brief outline of his equipment and it appears that he used Rolleiflex, Hasselblad, Leica, Zeiss, Leica M and flex as well as Nikon and large format (modified Speed Graphics amongst others)
Hope this is of assistance
Regards
Harry