- Messages from the Hollow Earth
- Telos: 1st Transmissions ever received from the Subterranean City beneath Mt. Shasta
- Telos : The Call Goes Out from the Hollow Earth and the Underground Cities
- Secrets of the Subterranean Cities
- The Call Goes Out: Messages from the Earth's Cetaceans: Interspecies communication
- Raymond W. Bernard
- Eira Reeves
- Carl A. Price
- Jean Rehkamp Larson
- Terry Landau
- Francesca Fremantle
- Neil Gregor
- Robert D. Hieronimus
- Craig Hines
- Ralph Nading Hill
- Wenzell Brown
- Kenneth G. Salem
- Friend Pitts Williams
- Christine Schultz
- Harry Perdew
- Marian Shaw
- Joy V. Bliss
- Paul Boisvert
- Nick Hurwitch
- Phil Hornshaw