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The procedure for assigning a call number to gift books from the Updike Literary Trust has changed over time. Some titles have been given LC call numbers; some translations have not been cuttered by title. The current practice is to assign a Houghton call number. The prefix and cutter for John Updike have already been established as AC95.Up174. Every work by Updike has been given its own cutter–the first letter of the title followed by a number. For example, Seek My Face has been assigned "S9".