Search Collections
- Object[19]
- yes[19]
- no[19]
- american[19]
- bucks county[6]
- delaware river[19]
- delaware river region[1]
- delaware valley[13]
- doylestown[6]
- mercer county[13]
- new jersey[13]
- pennsylvania[6]
- trenton[13]
- united states of america[19]
- bed of river[11]
- bed of stream[1]
- argillaceous material[2]
- argillite[14]
- slate[1]
- stone[2]
1 - 19 of 19 Records
1 - 19 of 19 Records