I LOVE historical cocktail recipes!!! This is just great!!! According to Robert Hess, "This drink was named for a member of the family which founded the Guion Line, a steamship company which operated from 1866 to 1892 and was one of the primary steamship lines providing transportation from London to New York. This drink was probably created at the Waldorf Astoria bar."
1 1/2 oz Sweet Vermouth
2 Dashes The Bitter Truth orange bitters