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- Finley, Irene 9
- Squirrels 7
- Lectures and lecturing 6
- Pigeons 4
- Bridges--Design and construction 2
- Harbors 2
- Passeridae 2
- River engineering 2
- United States--Appropriations and expenditures 2
- Birds--Conservation 1
- Boston (Mass.) 1
- Brooks, Phillips, 1835-1893 1
- Buildings 1
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- Cities and towns 1
- Conservation of natural resources 1
- Lash, Don 1
- Massachusetts Fish and Game Association 1
- Railroad construction & maintenance 1
- River surveys 1