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Part II: Family Correspondence, 1874-1981 (continued)
Niece, Ann Jensvold, 1942-1980, undated (continued)
(2 folders)
BOX II: 12 Siblings
Hempstead, Hester “Nan” Ridlon (sister), 1919-1964, undated
Ridlon, Hugh O. T. (brother), 1925-1965
Ridlon, John R. “Bob” (brother) and Emily (sister-in-law), 1925-1944, undated
Ridlon, Noel (brother), 1925-1949
Van Ingen, Margaret “Peggy” Ridlon (sister)
1914-1970
(7 folders)
BOX II: 13 1971-1973, undated
(3 folders)
Ridlon, John, to Emily Ridlon, transcripts, 1887, 1927
Ridlon, John and Emily, with miscellaneous family and nonfamily members, 1914-1942, undated
(2 folders)
BOX II: 14-27 Part II: General Correspondence, 1892-1981
Letters received and sent.
Arranged chronologically.
BOX II: 14 1892-1918
(8 folders)
BOX II: 15 1919-1924
11 folders)
BOX II: 16 1925-1948
12 folders)
BOX II: 17 1949-1959
(9 folders)
BOX II: 18 1960-1966
(9 folders)
BOX II: 19 1967-1969
(7 folders)
BOX II: 20 1970-1971
(8 folders)
BOX II: 21 1972
(7 folders)
BOX II: 22 1973
(9 folders)
BOX II: 23 1974
(8 folders)
BOX II: 24 1975
(9 folders)
BOX II: 25 1976-1977
12 folders)
BOX II: 26 1978-1980
(10 folders)
BOX II: 27 1981, undated
(9 folders)
BOX II: 28-81 Part II: Subject File, 1890-1983
Correspondence, memoranda, reports, notes, clippings, and printed and near-print matter.
Arranged alphabetically by family member and therein by subject. Items are filed chronologically within folders.
BOX II: 28 Piccard, Don
Balloon Federation of America
Correspondence
Piccard, Don
Aug. 1959-June 1981
(12 folders)
BOX II: 29 July 1981-Sept. 1983, undated
(11 folders)
BOX II: 30 Piccard, Wilma, 1972-1982, undated
(10 folders)
Event applications, 1976
(2 folders)
BOX II: 31 Gable v. Balloon Works, product liability suit, 1982
Membership, 1975
Miscellany, 1961-1982, undated
(4 folders)
“Pilot News” (news letter), 1974-1982
(5 folders)
BOX II: 32 Printed and near-print matter
1959-1981
(9 folders)
BOX II: 33 1982-1983, undated
(6 folders)
Questionnaires, 1980-1982, undated
(4 folders)
BOX II: 34 Writings and notes, 1967-1983, undated
(2 folders)
Don Piccard Balloons, Inc.
Printed matter, 1971-1973, undated
Product liability suits
1968-1975
(7 folders)
BOX II: 35 1976-1978, undated
(5 folders)
BOX II: 36 Piccard, Jean
Aéro-Club Suisse, 1922-1925
Alexander, Jerome, 1941-1944
Balloon flight, 1913
Calco Chemical Co., Bound Brook, N.J., 1924-1927, undated
(3 folders)
Calculations for visibility at different heights above the earth's surface, undated
Compalmeter, 1955-1958, undated
Conference to discuss concepts of standard altimeter and altitude coordinator, Atlantic City, N.J., 1958-1960, undated
Course outlines and examinations, 1921-1924, 1942-1948, undated
Easy Pickins,play re Piccard brothers, produced by the University of Pennsylvania, Philadelphia, Pa., 1933-1934
Electric snail fence, 1958
BOX II: 37 Hercules Powder Co. Experimental Station, Kenvil, N.J.
Correspondence with
Kaiser, Harry E., 1929-1932
(3 folders)
Norman, G. M., and Ernest M. Symmes, 1929-1932, undated
(4 folders)
Reports, 1928-1932
(4 folders)
BOX II: 38 Northern lights, 1953
Oxygen converter
Correspondence, 1940-1945, undated
Filtration of oxygen, undated
Hospital oxygen converter, 1941-1944, undated
Inventions and patents, 1944, undated
Inverted converter, 1943-1948, undated
Ohio Chemical and Manufacturing Co., 1942-1948, undated
Piccard, Auguste
Lecture tour, 1932-1933, undated
School records, 1890-1899
Piccard, Jules and Hélène, estate of, 1930-1933
Public schools, Minneapolis, Minn., 1952-1953
Research problems, 1937-1941, undated
School records, 1890-1913
(2 folders)
“Thin Wire Thermometer for Radiosondes,” article
Correspondence, 1953-1955
Drafts and notes, 1941, 1954, undated
BOX II: 39 Piccard, Jeannette
“99 Percenter,” 1972, undated
A-Cross, 1977-1978
American Association of Retired Persons, Greater Minneapolis Chapter, Minneapolis, Minn., 1974-1978
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