I've read most things steam but was unaware of The Mid West Steam Motor Company of Laramie Wyoming. Apparently EM Turner, of this company, was in communication with Pearson Cox and a number of blue prints were sent across.

Through a lucky purchase I now own the following.
"INSTRUCTIONS TO OWNERS" of the PEARSON-COX "FIFTEEN" LIGHT STEAM CAR
Drawing No. 6 Burner OG Fitting & Jet 5.12.12
Drawing No. 7 Assembled 10 hp Light Steam Car 30.01.08
Drawing No. 25 Triple Pump & Details 18.02.10
Drawing No. 151 3 cyl engine 8hp 14.06.13
Drawing No. 153 Generator Burner & Condensor Cycle Car S5 10.06.13
Drawing No. 167 Assembled 8 hp Light Car 24.03.14

I only know of one surviving cycle car, but if anyone needs help feel free to contact me.

Brian