Steve and Barb Hile
Eric Lombard, Ray Breyer and Larry Ostesh have done a lot of research along these lines with regards to boxcars which can be found in the files section of this list. Such as
Seek and ye shall find...
From: main@RealSTMFC.groups.io [mailto:main@RealSTMFC.groups.io] On Behalf Of Armand Premo
Sent: Monday, September 16, 2019 12:17 PM
Subject: Re: [RealSTMFC] Ratios
To carry ratios a bit further would be the ratio of wood to steel freight cars per era one is modeling.Armand Premo