@misc{indiciaeac23021c925b,
  title = {Index of surface-water records, part 5, Hudson Bay and upper Mississippi River basins, to September 30, 1948},
  author = {Members of the Engineering Geology and Ground Water Branches, U.S. Geological Survey},
  year = {1949},
  doi = {10.3133/cir58},
  url = {https://pubs.usgs.gov/publication/cir58},
  note = {Source identifier: cir58}
}