The letters MC at the end of a report number indicates a microfiche copy only. As of 1993, the SLAC Library no longer receives microfiche copies of reports from other laboratories except for University Microfilm series of thesis (UMI-). Microfiche are kept in special drawers near the Video Room in the book stacks. A microfiche reader/printer is on the table behind the drawers.
To use a microfiche, simply remove it from its drawer. It need not be signed for, but should not be taken out of the Library except by special arrangement. A librarian will be happy to help you with the microfiche reader/printer if you are unfamiliar with it. DO NOT refile microfiche! Return it to the box on the top of the microfiche drawers.