The ACHS collects and preserves materials relating to American history and the contributions of Catholics. The American Catholic Historical Society (ACHS) was founded for the purpose of collecting and preser AMERICAN CATHOLIC HISTORICAL SOCIETYS MISSION IS TO COLLECT AND PRESERVE MATERIALS RELATED TO AMERICAN CATHOLIC HISTORY AND TO CATHOLIC CONTRIBUTIONS IN BUILDING AMERICAN SOCIETY AND THE CATHOLIC CHURCH IN THE UNITED STATES. THE SOCIETYS GOAL IS TO DOCUMENT KEY US CATHOLIC CONTRIBUTIONS.