For nearly 40 years, families scoured the packed shelves of Booktenders’ Secret Garden, Doylestown’s revered children’s bookstore, where owner Ellen Mager could always be found at her post.

For nearly 40 years, families scoured the packed shelves of Booktenders’ Secret Garden, Doylestown’s revered children’s bookstore, where owner Ellen Mager could always be found at her post, …