@misc{indiciae03a7863fd775,
  title = {Map showing earth materials that may compact and cause settlement in the Golden Quadrangle, Jefferson County, Colorado},
  author = {H. E. Simpson},
  year = {1973},
  doi = {10.3133/i761d},
  url = {https://pubs.usgs.gov/publication/i761D},
  note = {Source identifier: i761D}
}