Here is an illustrated 32-page brochure on draft gear from Miner
Enterprises, Inc., formerly known as W. H. Miner, Inc. This company
has supplied the railroad industry with components since the late
1800s. There is a lot of history in the brochure.

Here is the link:

Short link version: http://tinyurl.com/34pr6j

Long link version:
http://www.minerent.com/pdf/The%20Amazing%20Story%20Of%20The%20Miner%
20Tandem%20Spring%20Draft%20Rigging.pdf

Bob Chaparro
Mission Viejo/Hemet, CA