Putnam, Michael.
Michael Putnam papers, 1967-1987.
Letters to and from Putnam relating to the work of the observatory from 1967-1987 while he was Trustee. Additional papers from the 1980s were added.
Lowell Observatory -- Administration.
Lowell Observatory
Astronomy
Astronomers lcsh
AIP-ICOS
Lowell Observatory. 1400 West Mars Road, Flagstaff, Arizona 86001, USA