@misc{indiciae09dcf9e1bd96,
  title = {Bedrock geologic map of the Unionville quadrangle, Orange County, New York, and Sussex County, New Jersey},
  author = {Avery Ala Drake and Donald H. Monteverde},
  year = {1992},
  doi = {10.3133/gq1699},
  url = {https://pubs.usgs.gov/publication/gq1699},
  note = {Source identifier: gq1699}
}