@misc{indiciaecafd050440df,
  title = {Glacier observations, Glacier National Park, Montana, 1961},
  author = {Arthur Johnson},
  year = {1962},
  doi = {10.3133/ofr6269},
  url = {https://pubs.usgs.gov/publication/ofr6269},
  note = {Source identifier: ofr6269}
}