From the July 20, 1911 Brooklyn Daily Eagle:

“Coin, Iowa–Marriage by telephone, with the officiating clergyman in one place, the bridegroom in another and the bride in still another, was made possible here, yesterday. The Rev. H.B. Minton, sitting in his study, united in marriage George Prentice, at his home in Northboro, and Miss Mary De Witt, in Blanchard. Coin is five miles north of Blanchard, and Northboro, three miles west of Blanchard, is about the same distance from the pastor’s home.”