AAR Closed Car Loading Guide

This is a link to the 2014 version of this document:

https://aar.com/standards/DPLS-content/Closed%20Car%20Loading%20Standards/CCLG%20Part%208%20-%20Bagged%20Commodities%207-2014.pdf

Obviously the document is too recent for this group.

Does anyone have a source or link to a similar document that would be dated 1960 or earlier?

Thank you.

Bob Chaparro

Hemet, CA