Dictograph: Further Information

Circuit Diagrams (Courtesy Andrew Willett)

1. Masterphone, Australia 1953

2. Britain, 1936

Advertising

1. Britain circa 1936 (Courtesy Andrew Willett)

2. Masterphone circa 1940s

3. 1920s

4. Dictogrand loudspeaker

5. Dictograph loudspeaker

6. Catalog cover, United States 1920s

How To Use manual (Courtesy Andrew Willett)