Many thanks to Ryan Krengel for sending this in to me to add to my archive of lumber load information. Ryan is a professional locomotive engineer for CSX in Illinois, and he offered to send me these photocopied pages of a supplemental pocket reference produced by Conrail for their workers and customers with diagrams of how to load and secure lumber on flatcars.
The guide contains about 20 pages (originally about 4×6″ size) of neat little sketch drawings of several variations of loading and securement methods for different sizes of wrapped lumber bundles, with details of things like what size lumber to use for the vertical stabilizers, stakes a guide rails, and how the bundles are strapped together.
Altogether just a gem and a great resource for studying how lumber loads are secured.