According to the 1984 edition of The Heritage of Ashe COunty, the Post Office was switched to Warrensville in 1916, prior to 1888, it was Mouth of Buffalo. According to a section of "Rambling through Ashe," a Dr. Wilcox lived "at Dresen on the river near Warrensville." (p 83) It must not have been too far from Dresden to Berlin, whose name was changed to Bina in 1918. For practical purposes, Dresden doesn't exist anymore.