Paul C. Koehler
I have a set of the AAR loading Pamphlets MD-1 thru MD-7 covering the 1950 to 1953 period and could find no reference to the loading of propellers which surprised me. MD-7 even covers military equipment. I also have several of the numbered Pamphlets but do not have them all and again no reference to propellers.
There could be a numbered pamphlet that I do not have that covers this subject.