Determining if commercially available microfilm is acceptable
Acceptable Microfilm:
Microfilm or microfiche created from 1985 to the present.
Microfilm or microfiche created between 1980 and 1984 from the following
libraries only:
Library of Congress
New York Public Library
Harvard
Yale
Columbia
Stanford
Berkeley
Michigan
Cornell
Unacceptable Microfilm:
Microcards
Micro-opaques
Any film created before 1980.
Undated film