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 Historicae Penus Artis Historicae Penus Artis Historicae Penus ("Treasury of the Art of History", 1579) is a compilation of 18 ars historica works brought out in 1579 by the late Renaissance Basel printer Pietro Perna. This compendium in octavo appeared in 2 volumes with a copious index. A third volume adds the final work by , often missing in library collections as a separate edition. Three years earlier, in 1576, Perna brought out a single volume in the same format that ran to 1140 pages and featured the central work of Jean Bodin in its title, along with twelve other authors. Perna