Laurence M. Haynes is a licensed land surveyor, whose hobbies include music, sports, and illustrations.  He also has four dogs, who inspired him to include him in his series of books about a professor time traveling with his dogs.  His first three dogs, Lily, Benji, and Karat, are featured in the first book in the series, and after he got the fourth dog, he added Jem to the series.

Haynes has also been active in a local church in his community, St. Edward the Confessor Church in Syosset, New York, which has inspired some of the stories that are designed to especially appeal to the Christian community, such as the visits of the professor and his dogs to Bethlehem to witness the birth of Jesus on Christmas Eve.