Lerner Publishing Group, based in Minneapolis since its founding in 1959, is one of North America's largest independent book publishers for children and young adults. The company is made up of the following imprints: Lerner Publications, Carolrhoda Books, Millbrook Press, Twenty-First Century Books, Graphic Universe™, ediciones Lerner (a Spanish-language imprint), First Avenue Editions, LernerClassroom and Kar-Ben Publishing. The publishing group has offices in Minneapolis and New York City.

Muscle Bound Bindery offers a complete range of bookbinding services to both library binding and commercial customers. We offer three main binding styles: Side-sewn case binding, Otabind layflat adhesive binding, and perfect binding. Complementary capabilities include folding, cutting, drilling, shrink wrapping, laminating and more.