1. Description of the American electro magnetic telegraph : now in operation between the cities of Washington and Baltimore. Illustrated by fourteen wood engravings Title: Description of the American electro magnetic telegraph : now in operation between the cities of Washington and Baltimore. Illustrated by fourteen wood engravings Date: 1845. Author: Vail, Alfred, 1807-1859. Collecting Area: Rare Books Call number: TK 5123 V35 1845 LOCAL