@misc{indiciaed1f7f7ad33a8,
  title = {The U. S. Geological Survey in the early 1900's - Reminiscences of D. Foster Hewett, Adolph Knopf, and Frank C. Calkins},
  author = {Donnel Foster Hewett and Adolph Knopf and Frank C. Calkins},
  year = {1997},
  doi = {10.3133/ofr97267a},
  url = {https://pubs.usgs.gov/publication/ofr97267A},
  note = {Source identifier: ofr97267A}
}