@misc{indiciaee902beee492c,
  title = {Photogeologic map of the House Rock Spring NW quadrangle, Coconino County, Arizona},
  author = {J. P. Minard},
  year = {1957},
  doi = {10.3133/i253},
  url = {https://pubs.usgs.gov/publication/i253},
  note = {Source identifier: i253}
}