The Internet Archive has a preservation copy of this work in our general collections.
J. E. A. W.. "The Mutue Fides-Stavoren Tinfields. By Percy A. Wagner, Ing.D., B.Sc., etc. Union of South Africa Geological Survey Memoir No. 16. pp. 192, 31 plates, 27 text-figures. 1920. 7s. 6d." Geological Magazine 59.07 (1922) 331