Typescript biography of Hammer

Front cover

Inside front cover

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Portrait of William J. Hammer, recto

Portrait of William J. Hammer, verso

Portrait of Thomas A. Edison, recto

Portrait of Thomas A. Edison, verso

Photograph of Menlo Park, recto

Photograph of Menlo Park, verso

Photograph of The Lamp Factory, recto

Photograph of The Lamp Factory, verso

Photograph of Edison's First Electric Railway, recto

Photograph of Edison's First Electric Railway, verso

Photograph of Pierre and Madame Curie, recto

Photograph of Pierre and Madame Curie, verso

Photograph of The Jumbo Dynamo, recto

Photograph of The Jumbo Dynamo, verso

Photograph of Listening to the Phonograph, recto

Photograph of Listening to the Phonograph, verso

Photograph of Jury on Telegraphy, Telephony, and Wireless, recto

Photograph of Jury on Telegraphy, Telephony, and Wireless, verso

Photograph of Selenium Cells, recto

Photograph of Selenium Cells, verso

Photograph of The First "Modern" Electric Sign, recto

Photograph of The First "Modern" Electric Sign, verso

Photograph of Balloon Trip, 1889, recto

Photograph of Balloon Trip, 1889, verso

Photograph of Maxim Airplane, recto

Photograph of Maxim Airplane, verso

Photograph of Langley Airdrome, recto

Photograph of Langley Airdrome, verso

Photograph of The Wright Brothers, recto

Photograph of The Wright Brothers, verso

Photograph of Hudson Fulton Celebration, recto

Photograph of Hudson Fulton Celebration, verso

Photograph of Part of Hammer's Laboratory, recto

Photograph of Part of Hammer's Laboratory, verso

Various photographs taken by different forms of light, recto

Various photographs taken by different forms of light, verso

Photograph of Lecture Platform, recto

Photograph of Lecture Platform, verso

Photograph of Telephones and Phonographs, recto

Photograph of Telephones and Phonographs, verso

Photograph of Tubes, recto

Photograph of Tubes, verso

Portrait of William J. Hammer and short biographical note, recto

Portrait of William J. Hammer and short biographical note, verso

Reprint from the Journal of the American Institute of Electrical Engineers, February, 1928, recto

Reprint from the Journal of the American Institute of Electrical Engineers, February, 1928, verso

Photographs of The William J. Hammer Collection of Tubes (and other Laboratory Apparatus), recto

Photographs of The William J. Hammer Collection of Tubes (and other Laboratory Apparatus), verso

Portrait of Thomas A. Edison addressed to William J. Hammer, recto

Portrait of Thomas A. Edison addressed to William J. Hammer, verso

Photograph of The William J. Hammer Incandescent Lamp Socket Collection, recto

Photograph of The William J. Hammer Incandescent Lamp Socket Collection, verso

Photograph of samples of materials used by Thomas A. Edison in his early experiments, recto

Photograph of samples of materials used by Thomas A. Edison in his early experiments, verso

Photograph of machine to show scientific phenomena by mechanical means, recto

Photograph of machine to show scientific phenomena by mechanical means, verso

Inside back cover

Back cover