found: Paris, souvenir de la Tour Eiffel, 1937cover (LL)
found: OCLC, May 29, 2014(access points: Léon et Lévy; Léon & Lévy; Léon et Lévy (Firm); Léon, M. et J. Lévy; usage: LL; L et L; Léon & Lévy; M. Léon & J. Lévy; Léon, M. et J. Lévy; Léon & J. Lévy)
found: Wikipedia, June 9, 2014(Léon & Lévy, a photograph editing company, was founded in Paris in 1864 by Moyse Léon and Isaac Lévy (Isaac, known as Georges, is also known as J. Lévy); the trade mark of the enterprise was "L.L." ("LL"); the firm was one of the most important postcard editors in France.)