21. Black Rock Forest Map of Inoperable Land, Wetlands and Protection Forests Creator: Denny, Charles Storrow, 1911-; Karnig, Jack J. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1985 Institution: Harvard Forest Archives
22. The Black Rock Forest Research Plots and Activities Creator: Tryon, H. H. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: January 1932 Institution: Harvard Forest Archives
23. Black Rock Forest Standing Timber - 1981 Creator: Scholz, H. F., Smith, K., and Denny, Charles Storrow, 1911- Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1981 Institution: Harvard Forest Archives
24. Black Rock Forest Topography and Natural Features Creator: United States Military Academy Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1978 Institution: Harvard Forest Archives
25. Blow up of USGS Map of Petersham Showing Harvard and Petersham State Forests Creator: Geological Survey (U.S.) Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1907–2014 Institution: Harvard Forest Archives
26. Boundary Survey of the Town of Petersham Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: February 16, 1934 Institution: Harvard Forest Archives
27. Brooks Woodland Preserve Creator: Trustees of Reservations (Mass.); Gould, E. M. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1970 Institution: Harvard Forest Archives
28. Brooks Woodland Preserve Creator: Trustees of Reservations (Mass.); Gould, E. M. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1970 Institution: Harvard Forest Archives
29. Brooks Woodland Preserve Creator: Trustees of Reservations (Mass.); Gould, E. M. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1970 Institution: Harvard Forest Archives
30. Bruce E. Laboffa and Steven Lange Land Creator: Wilson, B. E. , Jr. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: December 7, 2005 Institution: Harvard Forest Archives
31. Bryant Lots Petersham Creator: Tarbox, E. E. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: October 9, 1922 Institution: Harvard Forest Archives
32. Cellar Holes of Pirate Valley, Sherman Hill, Swift River, Harvard Forest and Vicinity Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1907–2014 Institution: Harvard Forest Archives
33. Clarence C. Harris Land Creator: Larson, C. H. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: November 7, 1951 Institution: Harvard Forest Archives
34. Compartments on Prospect Hill - 2008 Creator: Hall, B. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: July 14, 2008 Institution: Harvard Forest Archives
35. Composite of USGS Topographic Maps of Petersham ('Natural Resource Inventory') Creator: United States. Soil Conservation Service Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: November 1973 Institution: Harvard Forest Archives
36. Conservation Easements in the Town of Petersham Creator: Gould, E. M.; Lyford, Walter Henry, 1909- Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1974–2014 Institution: Harvard Forest Archives
37. Estate of Nathan Matthews Hamilton Mass Creator: Cline, A. C.; Harvard Forest (Research facility) Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: April 1923 Institution: Harvard Forest Archives
38. Experimental reproduction cuttings, Adams-Fay Lot (TS IX) Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: [1924?] Institution: Harvard Forest Archives
39. Experimental reproduction cuttings, Adams-Fay Lot (TS IX) Creator: Cline, A. C. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: 1924 Institution: Harvard Forest Archives
40. Federation of Women's Clubs State Forest Creator: Bowers, F.; Hall, F. G. Format: Maps/Atlases Collection: The Harvard Forest Map Collection Date: August 1931–May 1933 Institution: Harvard Forest Archives