(Kelly of the Clue Crew stands with a melting tray at the Crayola Museum & Factory in Easton, PA.)  The makers of Crayola introduced dust-free school chalk; it was so successful that it won a gold medal at the 1904 World Exposition in this city
The Crayola Experience proved so successful it prompted the launch... [DOC] [TLE] History | crayola.com [PAR] 1880 - Joseph Binney sets up headquarters in New York City, joined by son 
Edwin ... Binney & Smith incorporates September 30, in Easton, Pennsylvania 
and serves as ... for several carbon black producers, introducing carbon black to 
other countries.