Today, Bob Storozuk, MRHA President, dropped the above article as I gave him the four old MILW passenger car builders photo books (via John Grube) that MRHA will scan for its files. Someone had found it and kindly saved it for Bob to give to me. Thank you Bob and whoever saved it!
This article describes the building of the Dynamometer car at the Milwaukee Shops in 1930 and provides the earliest history of the car.
The full article is posted here: http://x-5000.org/dynamometer-details/1930-railway-age-article/