@misc{indiciaedee1b7fd5e9f,
  title = {Building stones of our Nation's Capital},
  author = {Charles F. Withington},
  year = {1975},
  doi = {10.3133/70039206},
  url = {https://pubs.usgs.gov/publication/70039206},
  note = {Source identifier: 70039206}
}