I'm familiar with their picture books and board books - they are on the shelves of bookstores big and small in my area. They have a lot of regionally-themed picture books for the Great Lakes area (Legend of Sleeping Bear, Tallulah - Mermaid of the Great Lakes, etc) and they are popular, well-produced, quality books. In the midwest they are distributed by Abraham Associates which has a sales team that visits stores, and their books are available through wholesalers like Ingram at industry standard terms.
Definitely legit.