Once the basic principle of the phonograph was discovered, the years of arduous work on its development by Edison and others dealt largely with the composition and handling of materials for ...

Hear echoes of the Victorian age, captured in some of the world’s first audio recordings, in this video essay on the ...

Bell demonstrated his telephone and Thomas Edison his phonograph at the Smithsonian Castle Building during meetings of the newly formed National Academy of Sciences, headed by Smithsonian Secretary ...