Url https://edisondigital.rutgers.edu/document/PT032AGZ1 Resource class dctype:Text Title [PT032AGZ1], Letter from Herman E Kiefer to Walter Seeley Mallory, June 15th, 1909 Creator Kiefer, Herman E Subject Patent application Testing and quality control Cement Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1909-06-15 Type Letter Identifier PT032AGZ1 Source 184:1065 Relation Edison Portland Cement Co Duncan and Duncan Dyer, Frank Lewis Edison, Thomas Alva Rights Thomas Edison National Historical Park Date Created 1909-06-15 Has Version https://archive.org/details/edisonmicrofilm184/page/n1074/mode/1up Archive.org Viewer, Microfilm Series Reel 184 Is Part Of PT032AGZ-F Recipient Mallory, Walter Seeley Uri https://edisondigital.rutgers.edu/document/PT032AGZ1 https://edisondigital.rutgers.edu/document/PT032AGZ1 --