I'm not sure if this is the proper spot to post this, but it's the closest I could find, and maybe it's already known. None-the-less:
I just stumbled upon a site that has bazillions (yes, THAT many!) things for children to read, dredged from U.S. public domain sources from around 1880 up until the early 1920's. The site is at:
The Baldwin Online Children's Literature Project
From their 'mission statement' page:
The Baldwin Project seeks to make available online a comprehensive collection of resources for parents and teachers of children. Our focus, initially, is on literature for children that is in the public domain in the United States. This includes all works first published before 1923. The period from 1880 or so until 1922 offers a wealth of material in all categories, including: Nursery Rhymes, Fables, Folk Tales, Myths, Legends and Hero Stories, Literary Fairy Tales, Bible Stories, Nature Stories, Biography, History, Fiction, Poetry, Storytelling, Games, and Craft Activities.
If you're a parent or grandparent of young children or a teacher of same, it's well worth checking out!