William Howard Taft, 27th president of the United States, was invited to Ada, and accepted the invitation. The visit was during his term as president from 1909 to 1913.
This photo post card from the Ada Public Library shows the horse-drawn carriage with the president and Ada dignitaries upon his arrival in Ada at the Pennsylvania Railroad depot.
The flip side of the post card shows a message from Ada to Mr. J.J. Motter of Xenia.