Letters of correspondence from Peter F. Drucker to Ernst Keller. The first letter invites Keller to L.A. for a visit and informs Keller of the guest bedroom available in his new home. The second letter inquires about a woman named Lisa and her health condition.
ADELA Investment Company Drucker, Peter F. (Peter Ferdinand), 1909-2005
Source
Correspondence from Peter F. Drucker to Ernst Keller, inviting Ernst to L.A. for a visit and inquiring about a woman named Lisa, November 9, 1971; Drucker Archives; Box 9, Folder 10; 2 pages
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