[CJ643AAA], Report from Edison Portland Cement Co, Thomas Alva Edison, October 1903
Management (companies and organizations)
[CJ643-F] Company Records Series -- Edison Portland Cement Company -- Plant Operations -- Reports
https://edisondigital.rutgers.edu/document/CJ643AAA
Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Archive.org Viewer, Microfilm Series Reel 206