Url https://edisondigital.rutgers.edu/document/CJ621ABD Resource class dctype:Text Title [CJ621ABD], Letter from Walter Seeley Mallory to Thomas Alva Edison, June 18th, 1912 Creator Mallory, Walter Seeley Subject Testing and quality control Production difficulties and adjustments Cement Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1912-06-18 Type Letter Identifier CJ621ABD Source 204:419 Relation Mason, William Horatio Rights Thomas Edison National Historical Park Date Created 1912-06-18 Has Version https://archive.org/details/edisonmicrofilm204/page/n428/mode/1up Archive.org Viewer, Microfilm Series Reel 204 Is Part Of CJ621-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/CJ621ABD https://edisondigital.rutgers.edu/document/CJ621ABD --