NACO participants may use the 053 field to record LC literature class numbers, other than children’s literature, associated with a personal name heading for an author.  Note that 053 fields are not assigned to undifferentiated personal name headings.  LC classification numbers found on bibliographic records created and input by LC (040 = $a DLC $c DLC) can be added to authority records without further consultation.  All other numbers require verification.  Verification can be requested by using the Web form for 053 submissions, available via the Web at:  This program will produce an automated response to the proposal accepted into the LC online shelflist.  If there is a change in the proposed class number, a separate email is sent.  It is the responsibility of the proposing institution to input the class number in the 053 field.

See also:

Section I:  New Authority Records