Correspondence and records associated with Fr. Gregory's work as a priest and member of national-level Church leadership. Includes incoming and copies of outgoing correspondence with bishops Carmel Henry Carfora, Ioan (Teodorovych), Joseph (Zuk), Bohdan (Shpyl'ka), and Mstyslav (Skrypnyk); correspondence with Church Consistory and Board; correspondence with fellow clergy (most prominently Fr. Andrii Ivanyshyn, Fr. Petro Bilon, and Fr. Ivan Hundiak) and laity; parish-related correspondence and records; certificates; mailings from the UOC of USA Consistory; records related to Sobors (Church Councils); correspondence with and manuscripts from the editorial office of the periodical "Ukrains'kyi Vistnyk"; deanery records and mailings; and related materials. Additional or unusual materials are noted at the file level.