@misc{indiciae25a421163376,
  title = {Geologic reconnaissance along proposed relocation of Route 2 in Maynard, Westford, and Ayer quadrangles, Massachusetts},
  author = {L.W. Currier and W. R. Hansen and R. H. Jahns and M.E. Willard},
  year = {1949},
  doi = {10.3133/ofr4916},
  url = {https://pubs.usgs.gov/publication/ofr4916},
  note = {Source identifier: ofr4916}
}