Encyclopedic Discography of Victor Recordings Project HistoryThe Encyclopedic Discography of Victor Recordings (EDVR) is an index to master recordings (matrixes) and published discs made by the Victor Talking Machine Company beginning in 1900. Approximately 1,000 new master recordings are added to the database monthly and the database will eventually extend to the end of the 78rpm era in the early 1950s.