Url https://edisondigital.rutgers.edu/document/B056aO Resource class dctype:Text Title [B056aO], Letter from William Abbott Hardy to Thomas Alva Edison, June 23rd, 1921 Creator Hardy, William Abbott Subject Patents Rubber research Publisher Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University Date 1921-06-23 Type Letter Identifier B056aO Relation U.S. Patent Office Rights Gallery of History, Inc Date Created 1921-06-23 Is Part Of B056-F Recipient Edison, Thomas Alva Uri https://edisondigital.rutgers.edu/document/B056aO https://edisondigital.rutgers.edu/document/B056aO --