Sort By:
  1. The copper-bearing rocks of lake Superior / by Roland Duer Irving.
    By: Irving, Roland Duer,
    Publication info: Washington,Govt. Print. Off.,1883.
    Contributed by: University of Connecticut Libraries (archive.org)
    View Book
  2. The Penokee iron-bearing series of Michigan and Wisconsin / by Roland Duer Irving and Charles Richard Van Hise.
    By: Irving, Roland Duer, - Van Hise, Charles Richard,
    Publication info: Washington, D. C. :U.S. Govt. Print. Off.,1892.
    Contributed by: University of Connecticut Libraries (archive.org)
    View Book