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- Object[69]
- no[69]
- american[69]
- abbott farm[3]
- albany county[2]
- bainbridge (pennsylvania)[2]
- berks county[3]
- big timber creek[22]
- central pennsylvania[1]
- chickies[7]
- delaware[1]
- district of columbia[1]
- east tennessee[1]
- eastern pennsylvania[1]
- eastern united states[2]
- ellsworth[1]
- fairmount park[1]
- fairview[4]
- gloucester county[26]
- hancock county (maine)[1]
- lancaster county (pennsylvania)[23]
- locust grove[5]
- loudonville[2]
- maine[1]
- mercer county[4]
- moores island[5]
- near trenton[3]
- new jersey[31]
- new york[2]
- oley[2]
- pennsylvania[30]
- philadelphia[2]
- philadelphia county[1]
- pricetown[1]
- rock retreat[6]
- trenton[1]
- union river[1]
- united states of america[67]
- cave[1]
- near girard ave. bridge[1]
- surface[1]
- argillaceous material[1]
- shale[69]
- slate[1]
- chipped[69]
1 - 32 of 69 Records
1 - 32 of 69 Records