- Author: Mark E. Haas Author Record # 118440
- Legal Name: Haas, Mark Ellery
- Birthplace: Florida, USA
- Birthdate: 21 August 1952
- Deathdate: 18 February 2007
- Language: English
- Webpages: findagrave.com, legacy.com, oz.wikia.com
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Fiction Series
- Oz Universe
- Leprechauns in Oz (2000)
- The Medicine Man of Oz (2001)
- Oz
- The Emerald Mountain of Oz (2009)
- The Baum Bugle, Spring 2003 (2003)