John Chamberlain person
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John Chamberlain worked_for
McGraw-Hill Book Company documented
document
“Willoughby Charles A and John Chamberlain MacArthur 1941-1951 New York McGraw-Hill Book Company 1954 441 p E745.M3W5…”
source: government document — Church Committee Final Report, Book VI: Supplementary Reports on Intelligence Activities · p.313