@misc{indiciae8b4525283ef0,
  title = {Field Marks of a Celebration: Roger Tory Peterson's Centennial Birthday},
  author = {J. Dunlap and C.S. Robbins},
  year = {2008},
  url = {https://pubs.usgs.gov/publication/5224928},
  note = {Source identifier: 5224928}
}