19th century American inventors

Chronicles the work of Martha Coston to perfect and market signal flares to the U.S. Navy and abroad.

A brief biography of the woman who helped come up with a better way to can fruits and vegetables.

Provides a biographical sketch of Granville Woods, sometimes known as the "Black Edison," and descriptions of some of his inventions.

Provides a biographical sketch of Thomas Alva Edison and a description of some of his most important inventions.

A brief biography of Alexander Graham Bell, focusing on his invention of the telephone and his lifelong work with deaf people.