6 books
Forest Situation in Wyoming and Sullivan Counties, Pennsylvania; no.10
The Forest Situation in Wayne and Susquehanna Counties, Pennsylvania; no.13
Forest Situation in Dauphin and Lebanon Counties, Pennsylvania; no.8
Forest Situation in Schuylkill and Carbon Counties, Pennsylvania; no.9
The Forest Situation in Luzerne and Lackawanna Counties, Pennsylvania; no.12
Forest Situation in Northumberland, Columbia and Montour Counties, Pennsylvania; no.11
