Joseph A. Tunzi, Chicago based author, foremost expert on Elvis Presley
Joseph Anthony Tunzi (born July 25, 1953) is a Chicago, Illinois-based author, publisher, and producer. He has been described as "a renowned author from Chicago" and "one of the foremost authorities on Elvis Presley," authoring, self-publishing, and producing over 60 titles about Presley, amongst others, for the past 34 years. Tunzi has also compiled a massive photo archive, from which he licenses photographs of Presley.

Adam Victor referred to Tunzi in his 2008 publication, The Elvis Encyclopedia as "one of the world's most prolific Elvis authors, with more than twenty books to his name, specializing in photo books about specific events and tours through his own publishing operation, J.A.T. Productions." Victor went on to write in The Elvis Encyclopedia that "many of Tunzi's books feature exclusive interviews and recordings and that he has also published a number of DVD titles, including the Elvis Presley Hot Shots and Cool Clips series."AMICI Journal wrote of Tunzi, "deciding to focus purely on his writing and publishing, building a huge archive of photos, every book Tunzi has released has included a plethora of rare photographs. With their beautiful layouts, and accurate information, Tunzi quickly built a reputation as a top writer and archivist."Tunzi is listed under American Authors on NobelAuthors.com .Additionally, Tunzi has been interviewed by several television and radio programs as well as for several newspaper articles and websites throughout his career. Between 1972 and 1977, Tunzi routinely was a guest commentator on Roy Leonard's radio program on WGN, often offering opinions on Elvis Presley's latest record releases and Elvis' personal concert appearances, films and television specials he had recently witnessed, among other subjects. Tunzi also regularly appeared as a guest on Jay Gordon's radio program Elvis Only. Tunzi has been a guest on Sirius Satellite Radio's Elvis Radio (Channel 19), having been interviewed while in Memphis as well as via the telephone. Tunzi has been interviewed on several occasions by Robert Alaniz's "Collecting The King" YouTube channel. Many of Tunzi's books are featured in libraries both in the United States and throughout the world.