@misc{indiciaec6b4597dad02,
  title = {Surface water supply of upper Mississippi River and Hudson Bay drainages, 1906},
  author = {Albert Howard Horton and Robert Follansbee},
  year = {1907},
  doi = {10.3133/wsp207},
  url = {https://pubs.usgs.gov/publication/wsp207},
  note = {Source identifier: wsp207}
}