GREAT THREAD. A few more photos to fill in the "bones":
1905 1st Change - 1906:
Pre-war 38/44 Outdoorsman (with Roper target stocks) - 1933:
Pre-war 38/44 Heavy Duty - 1931:
One of the 1st K-38 Masterpieces (notice the large ejector rod knob) K4564 - 1947:
Pre-Model 10 M&P - 2" Barrel - 1949:
Post-war 38/44 Outdoorsman with target stocks - 1950: