I have a P2K PS2 CD high side covered hopper model. Assuming that LL did some reasonable research before they did the lettering, the writing on the first two panels state:
"close hopper slides and roof hatches before car is moved"
One photo I have from the 1970 Car Builders Cyclopedia shows a similar Seaboard Coast Line hopper that has:
CAUTION
When Unloading
Open Roof Hatches
Of Each Compartment
Stencilled in about the same location.
If I find more I'll post it.
Ed
I am interested in building the coverd hopper in the following photo. Does anyone know what the lettering circled in red says?