Harvard Forest
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Clapp, E.H.
R.T. Fisher Correspondence: National Research Council
. 1928-1934
R.T. Fisher Correspondence: Northeastern Forest Experiment Station
. 1924-1934
R.T. Fisher Correspondence: Society of American Foresters
. 1918-1934
R.T. Fisher Correspondence: Toumey, J.W.
. 1912-1922
