Kraus came to Fargo in 1925 to handle advertising for several American Amusement Company-owned theatres, including the Garrick, Orpheum, Grand, and State. When the American Amusement Company bought the Fargo Theatre, Kraus moved his headquarters there, where he stayed until his retirement in 1960.
Ed's wife Hildegarde Usselman Kraus, would also become a significant part of the history of the Fargo Theatre, as well as the history of entertainment in Fargo-Moorhead. The couple met in 1925 when Hildegarde was staff organist at the State Theatre, and they married after a whirlwind courtship. Ed continued to serve as the local representative of the American Amusement Company, while Hildegarde played the organ for silent films at all of the area theatres.