12/31/1898 Robins Conveying Belt Co and Robins, Thomas to Edison, Thomas Alva
Competition and market structure; Sales and service; Rolls and crushers
[CJ011]  Company Records Series -- New Jersey and Pennsylvania Concentrating Works -- Administrative and Financial Records: Correspondence (1898)
[CJ011AEA; TAEM 149:975]
Courtesy of Thomas Edison National Historical Park.