There are multiple individuals who could be referred to as Frank Thomas; however, without more context, it is difficult to provide a description of a specific author. For instance, Frank Thomas could refer to:
1. Frank Thomas (1898-1994) - One of the leading animators for Disney, known as one of Disney's "Nine Old Men". He was not primarily an author but wrote books about animation including "Disney Animation: The Illusion of Life" with fellow Disney animator Ollie Johnston.
2. Frank Thomas (born 1968) - A retired American professional baseball player, occasionally referred to as an "author" due to his autobiography, but not primarily known for literary works.
3. Frank Thomas could also be a less-known author without public recognition or widely published works.
Please provide more details if you are referring to a specific Frank Thomas with a literary background or known for a particular work.