A large independent publisher based out of Illinois, they also have offices in Connecticut and New York. Source books was started in 1987 by Dominique Raccah. They also have several imprints all founded within the last decade. They started out publishing business books but then expanded to gift books. A number of books they have published have been New York Times Bestsellers, including We Interrupt This Broadcast, And The Crowd Goes Wild both by Joe Garner.
They now publish fiction and nonfiction in a large variety of genres. A good way to get a feel for what they publish is to browse their catalog here.
They only accept unsolicited adult fiction in the romance genre. You can read their romance submission guidelines here.
They are interested in nonfiction submissions in the following categories: memoir, history, college reference and study aids, entertainment, general self-help/psychology, business, parenting and special needs parenting, health, beauty, reference, education, biography, love, relationships, gift books and women’s issues.
All submissions must be made via email. They try to respond to all submissions within 10 weeks.
To learn more about their submission guidelines you can go to their main page here.