thinning
- After thinning of 1959, PH I, 24H. 1960
- Appearance of Sample Plot B, TS II. 1968
- Before and after improvement cutting and thinning, PH II - 24D. 1951
- Before and after row thinning, PH I, 24F. 1951
- Before and after thinning - verticals of canopy, PHI, 24G, Exp 24-1. 1951
- Before and after thinning and improvement operation, PH II, 19B. 1951
- Before and after thinning, PH I - 25K. 1951
- Before and after thinning, PH I, 26N. 1951
- Cutting operations - thinning, PH I, 26N. 1961
- Dendrometer Experiment. 1949-1950
- Dendrometer measurements on a hardwood stand, Tom Swamp IV. 1948-1949
- European larch plantation, PH VII, Lr. 1, .4, 1931. 1931
- Exp. 45-1 Dendrometer Measurement of Thinning Effectiveness.. 1945-1948
- Experiment 45-1 Dendrometer Measurement of Thinning Effectiveness. 1945-1947
- Forest rehabilitation demonstration, Plot #1. 1942
- Forest rehabilitation demonstration, Plot #2. 1942
- Forest rehabilitation demonstration, Plot #3. 1942
- Forest rehabilitation demonstration, Plot #4. 1942
- Forest rehabilitation demonstration, Plot #5. 1942
- Hardwood thinning, Winchendon, Mass.. 1924
- Harvard Forest Silvicultural Models - Negatives. 1944
- Harvest Planning - Prospect Hill I and II. 1990
- Improvement cutting and thinning, PH VI. 1951
- Logging and post logging operations, TS IV. 1968
- Logging and thinning in spruce plantation, PH V, 16E and 19C. 1945
- Logging operations, southwest corner of heavy thinning, TS IV. 1968
- Low-thinning experiment, Exp. 56-2, TS I. 1964
- Old field pine thinned in 1963 and area fertilized, PH IX, Stand 5. 1963
- Pine thinning, Athol, Mass.. 1924-1925
- Ponderosa pine plantation, 15-B, PH III, P-5. 1944
- Post logging scenes - same station - same view, TS IV. 1967-1970
- Post logging scenes - same station - same view, TS IV. 1967-1970
- Preliminary Investigation of the Utilization Possibilities of Hardwood Timber. 1949
- Prospect Hill Tract - Stand Records. 1908-2011
- Red oak crop trees, Exp 28-1. 1940
- Red pine plantation before thinning operation of 1960-1961, PH I, 25K. 1961
- Red pine plantation, 22-B, PH III, P-1. 1944
- Releasing - thinning; TS V, central portion, north of cross road. 1909-1910
- Report on thinned areas, Meadow Water III, IV, and V. 1912
- Reproduction, thinning, improvement, and salvage, PH VII-D-1949. 1949
- SAF Meeting, Alfred, Maine. 1925
- Sample plot; SC II. 1908-1920
- Slab City Tract - Stand Records. 1909-2010
- Stand before and after thinning; TS V, Northeast corner, Thinning of 1911-1912. 1911-1912
- Thinning and improvement - before and after - openings in canopy, PH II, 24C - Exp 43-1. 1951
- Thinning and improvement - before and after, PH II, 24-C, Exp 43-1. 1951
- Thinning and improvement cuttings, Petawawa Experimental Forest. 1918-1941
- Thinning and weeding to release promising crop trees. 1961
- Thinning before and after, Petersham Town Forest. 1930
- Thinning in progress, Plantation 24-H, PH I. 1959
- Thinning operation - before and after - openings in canopy, PH II, 24B. 1951
- Thinning operation - before and after, PH VI - 15F (2). 1951
- Thinning white pine, southern New Hampshire. 1927
- Thinning young hardwood stand, TS III. 1950
- Thinning, PH II, Ex 43-1, Mx-Sd-3 (1937). 1944
- Thinning, PH VI. 1951
- Thinning, TS V. 1927
- Thinning, TS VI. 1909-1910
- Thinning; TS III, P-2, .5 acre. 1927
- Tom Swamp Tract - Stand Records. 1833-2002
- Tree Ring Response to Over-Story Thinning. 2003
- A Two-year Dendrometer Experiment on White Pine, Prospect Hill II, 24D. 1949-1950
- Untreated mixed hardwood, Age 18, Federation Forest. 1935
- Views in Exp 56-2 area, TS I. 1961
- White pine plantation 15-F (2), PH VI, P-7. 1944
- White pine plantation, PH IV, P-9. 1944
- White pine seed source experiment plantation, PH I, 24 G. 1944