Jack, J.G.
- Correspondence with Harvard University proposing the establishment of a forestry school. 1903
- History of the Harvard Forest, 1902-1985. 1902-1985
- Letter from R.T. Fisher to Mother, 1909. 1909
- Official Register of Harvard University - Division of Forestry 1910-11. 1910
- Official Register of Harvard University - Division of Forestry 1910-11. 1910
- Petersham Woodticks. 1909-1910
- R.T. Fisher Correspondence: Cary, Austin. 1901-1922
- R.T. Fisher Correspondence: Eliot, C.W.. 1904-1923
- R.T. Fisher Correspondence: Jack, J.G.. 1913
- R.T. Fisher Correspondence: Massachusetts Forestry Association. 1912-1934
- R.T. Fisher Correspondence: Sabine, W.C.. 1908-1913
- R.T. Fisher Correspondence: Schenck, C.A.. 1909-1932
- R.T. Fisher Correspondence: Weston Jr., W.H.. 1931