The Catholic Central Union of America, founded in 1855 and headquartered in St Louis, has gifted their Italian immigration files to the Italian Community of St Louis. The files include tens of thousands of documents regarding immigration settlement from the 1880s until the 1960s.

Before Catholic Charities, the Catholic Central Union of America was responsible for settling immigrants in the St Louis area. The organization's purpose is to promote Christian humanism with respect for the dignity and rights of all human beings. It is located near Saint Louis University at 3835 Westminster Place, Saint Louis, Mo. 63108.