Url https://edisondigital.rutgers.edu/document/E1518EAW Resource class dctype:Text Title [E1518EAW], Letter from Claude Heft Opdyke to Thomas Alva Edison, May 8th, 1915 Creator Opdyke, Claude Heft Subject Purchases Chemicals, chemical products, and chemical processes Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1915-05-08 Type Letter Identifier E1518EAW Source 261:287 Relation Edison Portland Cement Co Dominion Iron and Steel Co Ltd Badger (E.B.) and Sons Co Plummer, James Henry Hirzel, Heinrich Meadowcroft, William Henry Rights Thomas Edison National Historical Park Date Created 1915-05-08 Has Version https://archive.org/details/edisonmicrofilm261/page/n297/mode/1up Archive.org Viewer, Microfilm Series Reel 261 Is Part Of E1518E-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/E1518EAW https://edisondigital.rutgers.edu/document/E1518EAW --