John Bolig's Victor Discographies (Mainspring Press)
Print Discographies
- The Victor Red Seal Discography: Volume I: Single-Sided Series (1903-1925)
- The Victor Red Seal Discography: Volume II: Double-Sided Series to 1930
- The Victor Black Label Discography: Volume I (16000–17000 Series)
- The Victor Black Label Discography: Volume II (18000–19000 Series)
- The Victor Black Label Discography: Volume III (20000–21000 Series)
- The Victor Black Label Discography: Combined Volume IV: Complete 22000, 23000, 24000, V-38000, V-38500, and V-4000 Series
- The Victor Discography: Green, Blue and Purple Labels (1909-1927)
- Gems: The Victor Light Opera Company Discography (1909–30)
- The Victor Discography – Special Labels, 1928 to 1941
Online Discographies
- The Recordings of Beniamino Gigli – His Master’s Voice and Victor
- RCA Victor Program Transcriptions – Excerpt from “Special Labels, 1928-1941”
- Victor Film and Theater Records – Excerpt from “Special labels, 1928-1941”