Got this from the 911LifeLine Yahoo group.
On February 16, 1968, the first 9-1-1 call is placed by Alabama Speaker of the House Rankin Fite from Haleyville City Hall to U.S. Rep. Tom Bevill at the city’s police station. Bevill reportedly answered the phone, “Hello.” The Alabama Telephone Company had beaten ATT&T’s implementation by 35 days. Twelve days later, on February 22, 1968, Nome, Alaska implements 9-1-1 service.
The complete history of 9-1-1: http://www.911dispatch.com/911/history/