1957 Catalog
Similar to the previous few catalogs, this one shows the Trombone, Cornet and Trumpet for each model: Ambassador, Special, Studio, Super and Recording. Priced above the Recording, the new highest priced model is now the Mendez Trumpet and Cornet. The Aida (Herald) trumpet also first appears in this catalog.
This catalog is undated, but based on the models that appear, 1957 is the best estimate, however, the valve slide braces on the image of the Super trumpet are several years out of date.
Pages 16-26 show other brasses and woodwinds.