Columbia release ten inch recordings of popular and light classical music in several numerical series, including:

Columbia DB

Columbia CB

Columbia FB

Regal

CLPGS has published a complete Regal catalogue.  The Regal MR-prefix series ended at MR 748.

Regal Zonophone

Regal Zonophone was formed in 1933 by the amalgamation of two low-priced labels, HMV's Zonophone and Columbia's Regal.  The combined entity was owned by Columbia.  Regal Zonophone continued the MR prefix series of record numbers that had started on the Regal label.

The lists of Regal Zonophone records that follow on the Child Pages are the result of extensive research by Community members Terry Brown, Doug Hamilton and Tony Middleton.  I am greatly indebted to them.