The plaque reads:
The first transcontinental telephone call was transmitted by a telephone instrument of this type on January 23, 1915. Mr. Theodore N. Vail, President of American Telephone and Telegraph Company, talked from Jekyll Island to Dr. Alexander Graham Bell, inventor of telephone in New York; Thomas A. Watson, assistant to Dr. Bell, in San Francisco; and to President Woodrow Wilson in Washington, D.C.
Let’s go back in time. Consider when phones were called telephones, only mounted on the wall, only had cables linking them, and were hideously expensive to use.
Afterthought: why is Assistant Watson not a “Mr.”?
Also: visit this monument on Jekyll Island, Georgia.