Now you can more easily locate records of religious events such as baptisms and marriages as well as other ecclesiastical documents related to Catholic churches throughout America. Such documents are primary resources for valuable genealogical data. While the parish is the most fundamental unit for researching Roman Catholic records diocesan archives are often the key to locating parishes schools hospitals and other Catholic institutionsamp151some of which may have moved or closed over the years. U.S. Catholic Sources identifies each archdiocese and diocese in the U.S. and provides geographical boundaries addresses and information and briefly outlines the holdings and research policies for each. Diocesan archives often contain copies of diocesan newspapers diocesan parish and institutional histories records from closed churches and more.