1 Monaco, Prince of, 1947, 1953-1956
2 Mowat, Farley - 1965-1968, 1972-1973 correspondence re: The Polar Passion from Hugo Levin articles book reviews Helene's notes on To the Top of the World book reviews "Man's Mad Quest for the North Pole" Maclean's, September 4,
1965, Vol. 78, No. 17
3 Murphy, Marion (Mrs. Eugene A.), 1966-1976; Note : her husband knew Cook and was trying to organize an expedition to fly over the Pole and establish existence of Bradley Land; however he died suddenly (1939) before he could carry out these plans extensive correspondence with H. Vetter, re: her Cook biography ms excerpts of various correspondence between others, re: Cook/Peary (Marion's research notes)
4 Murphy, Marion (Mrs. Eugene A.), 1937-1939, 1954-1958 letters to Dr. Cook from Eugene Murphy, 1937-1938, re: expedition over Bradley Land letter from Marion to Dr. Cook, re: Eugene's death, 1939
5 Murphy, Marion (Mrs. Eugene A.), manuscript, "The Life of Dr. Frederick A. Cook, Explorer," 1972 with notes by H. Vetter
6 "N" miscellaneous, 1954-1956, 1964, 1973
7 "O" miscellaneous, 1954, 1956, 1973
8 O'Connor, Eileen, 1941-1942, 1950-1951, 1953
9 Olson, David B. (Bud), 1970-1973, 1976
10 "P" miscellaneous, 1953-1959, 1966-1968, 1970, 1973
11 Pellegrini and Cudahy (publishers); later merged w/ Farrar, Straus, and Young, Inc., 1951-1957, 1960-1961 clippings royalty statements from Return from the Pole, which they published in 1951
12 Pohl, Frederick J., 1962, 1965, 1972-1976 article by Pohl, "Dr. Cook's Ascent of Mt. McKinley"
13 Pohl, Frederick J., 1950-1960 clippings he wrote the introduction for Return from the Pole, 1951
14 Purcell, Joe, 1964-1966, 1968-1969, 1971, 1973 notes by Hugo Levin, re: Purcell's article, re: Dr. Cook Upper Delaware Drummer, 1965 (incomplete); includes article "Frederick A. Cook" Upper Delaware Drummer, 1968 (incomplete); includes article "Vance Hunt Keeps Polar Fires Burning" (re: Cook & Peary)
15 "Q" miscellaneous, 1956
16 "R" miscellaneous, 1952-1957, 1961, 1964, 1968, 1972-1973
17 Rawlins, Dennis, 1969-1970, 1972-1974, 1977 article, re: Committee for the Scientific Investigation of Claims of the Paranormal, of which he is a member [1977?] correspondence w/Helene, re: his book Peary at the North Pole : Fact or Fiction? (doesn't believe either man made it to the Pole) paper: "Peary and the North Pole : The Lingering Doubt" by Rawlins; notes by Hugo Levin, re: Rawlins Polar Notes, no.10, October 1970 - contains article by Rawlins, "A retrospective Critique of Peary's North Pole Claim"
18 Records, references, 1954
19 "S" miscellaneous, 1950, 1953-1958, 1961, 1963, 1965, 1967, 1970-1978 Salentiny, Fernand, 1975-1977 Helene; 1978 Janet clippings
20 Sheridan, Jack, 1950-1953; note: Jack is the twin brother of James Sheridan
21 Sheridan, James and Ruth, 1970-1976
22 Shiffert, Steven and Margaret (Gurley), 1973-1975
23 Societies, 1953-1956 Arctic Institute of America American Polar Society National Geographic Society American Geographical Society Royal Scottish Geographical Society Explorers Club
24 "T" miscellaneous, 1940, 1951-1954, 1956-1957, 1961, 1973 Helene's notes
25 Thomas, Admiral Charles W. (Tommy), 1939, 1954, 1957-1961, 1964-
1965, 1970-1973.0 clippings correspondence between his son, C.W. Thomas Jr. and Helene, re: Adm. Thomas's death in 1973 obituary for Thomas copy of Thomas's article, "The Great Polar Feud : Who Won?" copies of Thomas' correspondence with R. Gibbons, re: Cook Society correspondence with H. Vetter, re: Cook Society
26 Thompson, Dr. Frank P., 1919, 1921, 1927, 1929-1932, 1936-1940, 1948,
1951,-1956, 1958 correspondence between H. Vetter and Thomas P. Thompson III, Dr. F. P.'s son, 1954-1956, 1958 correspondence between Dr. Cook and Thompson, re: Sheepshead Bay Yacht Club bonds that originally belonged to Dr. Cook and Marie, 1919, 1921, 1937-1938
1929 correspondence, re: Dr. Cook's parole Three 1940 telegrams, re: Dr. Cook's stroke, pardon Correspondence between Dr. Thompson and others, re: Cook's medical condition, incl. R.S. vonAhlefeldt, 1940
27 Thompson, Larry, 1967, 1969-1972 clippings of articles he authored (he was a columnist for the Miami Herald), re: Cook/Peary
28 Treshnikov, A.F., 1970, 1972-1973, 1975 correspondence between Helene & others, re: Treshnikov miscellaneous Cyrillic publications
29 "U" miscellaneous, 1954-1956, 1963, 1965, 1971
30 "V" miscellaneous, 1953-1958, 1962, 1964, 1966, 1973-1974 von Ahlefeldt, Ethel (Ralph von Ahlefeldt's wife--2nd?)
31 "W" miscellaneous, 1942, 1953-1956, 1958-1960, 1965, 1969-1975 Wright, G. Theon correspondence with Helene; also related clippings, Helene's notes
32 "Z" miscellaneous, 1956
33 Zavatti, Silvio, 1957-1958, 1960-1962, 1964-1968, 1970-1976 clippings notes by H. Vetter translations of articles written by Zavatti Correspondence, Russell W. Gibbons, 1954-1977