Thomas-Morse S-4 modifications/changes

Hi
During the twenties several (mostly S-4C) Tommy’s were civil used.
Some of these aero planes get modifications/changes, such as:
clipped wings/other engines/wing changes/rebuild in two-three seater/etc.
This was done by Yackey and Dycer (see aerofiles) but also others.
Who can help me with drawings/dimensions/history/colors/etc. concerning these aero planes?
Each detail is welcome.
Thanks
J.