Christian Doctrine was founded by the USCCB.
https://findingaids.lib.catholic.edu/repositories/2/resources/393/collection_organization
“ The Administrative files for the committee include files on the Baltimore Catechism, and various other catechisms. There are also files on Parish organizations which include leaflets, manuals, and various correspondences with the individual organizations. There are also files on Vacation Schools of Religious Education, which were summer schools of religion for Catholic public school students. This organization was founded and greatly influenced by Bishop O'Hara.”
He later became Archbishop.
https://pendergastkc.org/articles/edwin-ohara