Mabel insists Bell go to the U.S. Centennial Exhibit in Philadelphia, where his phone is a huge hit
Mabel insists Bell go to the U.S. Centennial Exhibit in Philadelphia, where his phone is a huge hit
Ad: Bell telephone roadshow
Ad: Bell telephone roadshow
First public exhibition of the telephone, in Salem, Mass.
First public exhibition of the telephone, in Salem, Mass.
Sold-out Salem phone exhibition with two-way speech to/from Boston
Sold-out Salem phone exhibition with two-way speech to/from Boston
Bell and Gower telephone exhibition in Lawrence, Mass.
Bell and Gower telephone exhibition in Lawrence, Mass.
Scientific American write-up of Bell's hand telephones
Scientific American write-up of Bell's hand telephones
