Other
Free Library: Centennial Exhibition Digital Collection: Philadelphia, 1876
Commemoration of the 1876 Centennial hosted in Philadelphia which was the first major World's Fair. Features a timeline of historical background, an interactive map and a collection of historical images and primary sources.
Then Again
Then Again: Web Chron: Alexander Graham Bell Invents the Telephone
This site describes how Bell started out by seeking to help the deaf and ended up with a telephone. It gives brief information about his family and how he came to invent the telephone.
PBS
Who Made America? Alexander Graham Bell
From a PBS series, They Made America, comes this biography of Alexander Graham Bell and his invention of the telephone. Read about his development of the telephone and research into the sound.
Other
Progress Made Visible: American World's Fairs: Progress Made Visible
Find information on the four major expositions of the last half of the 19th century and beginning of the 20th century in the United States. Primary sources tout the progress in America over the century and celebrate the American spirit.
Massachusetts Institute of Technology
Mit: Invention of the Week: Alexander Graham Bell
This site provides a biographical sketch of Alexander Graham Bell and his inventions. Find out about Bell's patents in addition to the telephone.