There is Gates of Freedom which is a Passover Haggadah. There is Gates of Joy which is a young readers' prayer book for holidays and festivals. There is Gates of Heaven which is a machzor for children and parents for High Holidays. Finally, Gates of Understanding has two volumes. They were published by the CCAR, and might be available in bookstores or online (I think I got mine a few years ago at a Jewish Book Store). Francyne