Will the party that wanted a diagram or plan for an RPO mail hook please contact me off-board? I have somehow blundered into a 35mm slide (from a pile of slides to be discarded, no less) showing a diagram of Northern Pacific triple combine 1102, with a focus on the mail hook schematic and overall layout.

Go ahead, folks, tell us all what book it's from or where the car is preserved today.

lner4472@bcpl.net