@misc{indiciaee0eb0050b0c4,
  title = {Index of surface-water records to September 30, 1955. Part 5 - Hudson Bay and upper Mississippi River basins},
  author = {H. F. Matthai},
  year = {1956},
  doi = {10.3133/cir385},
  url = {https://pubs.usgs.gov/publication/cir385},
  note = {Source identifier: cir385}
}