Howard Dietz disease. Howard Dietz Howard Dietz (September 8, 1896 – July 30, 1983) was an American publicist, lyricist, and librettist. Dietz was born in New York City. He attended Columbia College and then studied journalism at Columbia University. He also served as publicist/director of advertising for Goldwyn Pictures and later MGM and is often credited with creating Leo the Lion, its lion mascot, and choosing their slogan "Ars Gratia Artis". In 1942, he was made MGM's Vice President in Charge of Publicity. He held that position until his retirement in 1957. He began a long association with composer Arthur Schwartz when
Artis Library Artis Library Artis Bibliotheek (English: Artis Library) is a nineteenth-century library located at Plantage Middenlaan 45 in Amsterdam. Since 2005, the Artis Bibliotheek has been part of the Special Collections at the University of Amsterdam. In 1838, Zoological Society Natura Artis Magistra was founded by a number of Amsterdam notables, including bookseller and bird lover Gerardus Frederik Westerman (1807-1890). The aim was "to promote the knowledge of natural history." This was done by founding the Artis Zoo and a zoological museum and a library. The society immediately received donations (including one from Westerman) for the library. With these donations, the