The Ukrainian Orthodox parish of the Holy Trinity existed in New Castle, Pennsylvania from the 1920s until the early 21st century. This collection contains metrical records, financial records, meeting minutes, and other materials related to its activity.

Collection contains register books, financial records, membership records, meeting minutes, sheet music, and realia.

Metropolitan Oleksander was bishop of the Polish Autocephalous Orthodox Church, and played a key role in the rebirth of the Ukrainian Autocephalous Orthodox Church (UAOC). His papers contain correspondence and records related to the Autocephalous Orthodox Church of Poland and the Ukrainian Autocephalous Orthodox Church during the periods of Soviet and Nazi occupation of what is now northwestern Ukraine and southern Belarus.

Seedorf was the site of one of many displaced persons camps that were established throughout the British and American occupation zones of Germany after World War II. This collection contains the records of the Ukrainian Orthodox parish located in that camp.

S.S. Peter and Paul Church in Freeland, Pennsylvania was a parish in the jurisdiction of the Ukrainian Orthodox Church of America. This collection contains records and register books from that parish.

Collection contains bound volumes of financial records, parish membership, meeting minutes, and sacramental records. It also contains three-ring binders of more recent financial records, choir books, and other records.