Pack, C.L.
- A.C. Cline Correspondence: American Tree Association. 1932-1936
- A.C. Cline Correspondence: Harvard Forest Bulletin. 1935
- Comments on the Harvard Forest, 1924-1934. 1924-1934
- R.T. Fisher Correspondence: Massachusetts Forestry Association. 1912-1934
- Ward Shepard Correspondence: Merrill, E.D.. 1936-1939