A "clean" withdrawal sheet from a file in the OSANSA series at the Eisenhower Library. My handwritten notation "all MR'd 4/1/92" is put in to help me keep track of this Mandatory Review request. Since then, I've learned that the only way to keep track is to get the MR number the library assigns you. If they don't send it to you automatically--and many repositories don't--you need to ask them for it specifically.