found: Buter, Erwin. Tien jaar onverwerkt verleden, 2016:title page verso (editor ... John Leerdam) page 7 (John Leerdam was the initiator of Julius Leeft!)
found: OCLC, Aug. 29, 2016(access point : Leerdam, John, 1961- ; usage : Leerdam, John)
found: Stichting Julius Leeft! WWW site, viewed Aug. 29, 2016:about web page (Stichting Julius Leeft!; began by John Leerdam, film and theater director in 2006; foundation was established after the performance of "The Tears of Den Uyl" at Paradiso, Amsterdam, December 4, 2005) page 70 (John Leerdam, MFA, artistic director, Sitchting Julius Leeft!)
found: Wikipedia WWW site, viewed Aug. 29, 2016:article web page (John Leerdam; John Arnold Walther Julius Leerdam; born July 23, 1961; Willemstad, Curaçao; moved to the Netherlands in 1982; he trained as a theater director and drama teacher at the Amsterdam Theatre School; from 1986 to 1987 and from 1991-1996 Leerdam stayed in New York City where he studied film directing and production; received a Master of Fine Arts at Columbia University; also took courses in international and public affairs and received management training communication skills; further actor training at the American Musical and Dramatic Academy, and director training at the Tisch School of the Arts; from 1996-1999 director and artistic director of the Cosmic Theater in Amsterdam; Dutch politician of Labour Party (PvdA); served as a Member of the House of Representatives; residence, Amsterdam, Netherlands)