Illustrated booklet providing specifications for various valves manufactured by the company, also includes a price list. The Mazda Valve Manual
Circular letter informing stockists of B.V.A. Valves about the decision to reduce the prices of the valves. Mazda Valves
Illustrated wireless catalogue providing specifications and costs of complete sets, radio accessories and spare-parts. The Wireless Catalogue
Illustrated booklet providing specifications and costs for the batteries it manufactured. The Catalogue of Batteries - Dry & Fluid Cells
Illustrated booklet containing brief descriptions, specifications and prices for various radio sets and accessories manufactured by the companies. Ediswan Radio Apparatus - Accessories and Constructors Components
Illustated booklet providing specifications for valves made by them at their works at Ponders End. The Valve Catalogue - Transmitting and Rectifying Valves
Illustrated booklet containing brief descriptions, specifications and prices for parts and accessories used to build gramaphone players manufactured by the companies. Ediswan Radio Apparatus - C2 Cone RK, Loud Speakers, Gramaphone Pick-Ups, Etc
Binder containig illustrated information leaflets about various types of electronic valves sold under the brandnames of Mazda and Ediswan. Types of valves include power amplifier & transmitting valves, mercury vapour rectifiers, cathod ray tubes, battery valves, A.C. main valves, A.C./D.C. mains valves and car-radio valves. Mazda Radio Valves
Illustrated booklet containing brief descriptions, specifications and prices for various radio sets and accessories manufactured by the companies. Ediswan Radio Apparatus and Mazda Radio Valves
Printed illustrated booklet providing specifications and costs for the thermionic receiving valves manufactured by the company. The Valve Catalogue - Receiving Valves