On this date in 1936 the Hoover Dam was utilized for the first time to generate energy. And in 1947, after more than 10 years of research, AT&T debuted a new way to reach someone.
On this date in 1936 the Hoover Dam was utilized for the first time to generate energy. And in 1947, after more than 10 years of research, AT&T debuted a new way to reach someone.