The Ammor Record Corporation issued their first records in 1940. Ammor focused on performers who were based on the West Coast. Recording and manufacturing were handled by C. P. Macgregor.
Ammor only issued records for a few months, issuing around 20 discs. When Ammor ceased operations, some of the recordings were subsequently released on Eli Oberstein's Varsity Records, and when Varsity quit, material originating from Ammor was in turn released on Savoy Records.