@misc{indiciae3eed911cf489,
  title = {Contour map of the bedrock surface, Old Lyme Quadrangle, Connecticut},
  author = {D.B. Meade and R.L. Melvin},
  year = {1974},
  doi = {10.3133/mf558a},
  url = {https://pubs.usgs.gov/publication/mf558A},
  note = {Source identifier: mf558A}
}