Keystone was a major distributor of stereographic images in Pennsylvania which, 1892 to 1963 produced and distributed educational and comic/sentimental stereoviews, and stereoscopes. By 1905 it was the world's largest stereographic company. In 1963 Department A (stereoviews sold to individual families) and the Education Departments were closed down, but Keystone continued to manufacture eye-training stereographic products as a subsidiary of Mast Development Company.
Here are some examples of the stereographs of Birmingham. On some views a number appears in the upper centre of the stereograph. This is a “set” number. It is the position of that view in its particular boxed set. So there must be others of Birmingham. Viv,
Here are some examples of the stereographs of Birmingham. On some views a number appears in the upper centre of the stereograph. This is a “set” number. It is the position of that view in its particular boxed set. So there must be others of Birmingham. Viv,
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