Photos and Negatives of the Hammer Collection

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection, recto

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection, verso

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection, recto

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection, verso

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection, recto

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection, verso

Photograph of view of the Selenium Section of the William J. Hammer Scientific Collection, recto

Photograph of view of the Selenium Section of the William J. Hammer Scientific Collection, verso

Photograph of view of the Aviation Section of the William J. Hammer Scientific Collection, recto

Photograph of view of the Aviation Section of the William J. Hammer Scientific Collection, verso

Photograph of view of the Selenium Section of the William J. Hammer Scientific Collection

Photograph of the William J. Hammer collection of portraits of scientific men

Photograph of view of the Edisonia Section of the William J. Hammer Scientific Collection

Photograph of view of the Aviation Section of the William J. Hammer Scientific Collection

Photograph of view of the Radium Section of the William J. Hammer Scientific Collection