Content Description: From the Collection: Records consist primarily of interoffice correspondence (1903-1923) and general correspondence (1903-1925). Correspondents in the home office in St. Louis include Paul A. Fusz, president; George S. Zehnder, secretary; and Charles G. Ewing, president after the death of Fusz in 1910. Major correspondents in the general office files include companies supplying equipment; mine foremen Peter F. Scherr (1907), Sam L. Clark (1908), Joseph Sorenson (1909-1910), and Charles Campp (1916); surveyor...