In December 1875 Western Union wrapped up the quadruplex court battles and gave Edison a new contrac

In December 1875 Western Union wrapped up the quadruplex court battles and gave Edison a new contrac

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In December 1875 Western Union wrapped up the quadruplex court battles and gave  Edison a new contract. This contract spelled out their expectations for Edison's patents  in clear language and gave him the assignment of developing an acoustic telegraph. He  used the money to build a research laboratory in Menlo Park, New Jersey, twenty-five  miles southwest of New York City. Menlo Park was where Edison built the phonograph,  the electric light bulb, and tinkered with Alexander Graham Bell's telephone technology.  About thirty men worked in the two-story facility, and while Edison reinforced his  reputation as an exacting boss, the whole group became very close. Edison's life was changing in other ways as well. His new family also moved to Menlo  Park when the facility was opened. On December 25, 1871, he married a young girl  named Mary Stilwell. She was a sixteen-year-old girl from a modest Newark family, very 
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