How can I find a microfilm that I know I used before if I do not have its call number?


Question:

How can I find a microfilm that I know I used before if I do not have its call number?

Answer:

Nearly all microform call numbers can be found in CLIO.

If the microform is not listed in CLIO, the call number can be found in the Periodicals & Microforms Reading Room (PMRR) card catalog.

Indexes may have to be used in conjunction with a call number to identify specific dates, series numbers, reel numbers, etc.  See also Indexes to Major Microform Collections at PMRR.