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1. Edison, Thomas Alva - 1847-1931, American inventor, b. Milan, Ohio. A genius in the practical application of scientific principles, Edison was one of the greatest and most productive inventors of his time, but his formal schooling was limited to three months in Port Huron, Mich., in 1854. For several years he was a newsboy on the Grand Trunk RR, and it was during this period that he began to suffer from deafness, which was to increase throughout his life. He later worked as a telegraph operator in various cities. Edison's first inventions were the transmitter and receiver for the automatic telegraph. 2. Bell, Alexander Graham - 1847-1922, American scientist, inventor of the telephone, b. Edinburgh, Scotland, educated at the Univ. of Edinburgh and University College, London; son of Alexander Melville Bell. He worked in London with his father, whose system of visible speech he used in teaching the deaf to talk. In 1870 he went to Canada, and in 1871 he lectured, chiefly to teachers of the deaf, in Boston and other cities. During the next few years he conducted his own school of vocal physiology in Boston, lectured at Boston Univ., and worked on his inventions. His teaching methods were of lasting value in the improvement of education for the deaf. 3. Carnegie, Andrew - 1835-1919, American industrialist and philanthropist, b. Dunfermline, Scotland. His father, a weaver, found it increasingly difficult to get work in Scottish factories. In 1848 he brought his family to Allegheny (now Pittsburgh), Pa. Andrew first worked in a cotton mill as a bobbin boy, then advanced himself as a telegrapher, and became (1859) a superintendent for the Pennsylvania RR. He resigned (1865) his railroad position to give personal attention to the investments he had made (1864) in iron manufactures. 4. John Davison Rockefeller - 1874-1960, b. Cleveland, grad. Brown, 1897 took over active management of his father's interests in 1911 and engaged in numerous philanthropies. Riverside Church in New York City was built through his gifts. He also gave vast sums for religious projects, for scientific investigation, and for the restoration of historic monuments. Among his most notable philanthropies were the restoration of colonial Williamsburg, Va., and the donation of the site for the United Nations headquarters in New York City. He founded (1931) and helped plan Rockefeller Center in New York City, which the Rockefeller interests, completed in 1939. 5. Gompers, Samuel - 1850-1924, American labor leader, b.