VINTAGE 1968 Levis 501 501e Jeans 30 x 30 MEASURED TAG: 32 X 33 SELVEDGE, USA | eBay
Levi's 501® Celebrates 150th Anniversary with Limited Reissue Models: A Look Back at the Iconic Jeans' History and Future | OTOKOMAE | Men's Fashion Media
Birch “Burt” Burdette Long (1878-1927) [RA 1906-1927] – salmagundi.org