STC and Wing call numbers

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This article provides an introduction to STC and Wing call numbers at the Folger. Please see the Folgerpedia article Ghost Busters: Eliminating non-existent STC numbers for Early English Books, which explains how the Folger is working to reclassify items that use this system. This List of call number changes provides recent information regarding these changes.

Ambox notice.png This article is currently a draft.

Decimal system for interpolating numbers in STC and in Wing

The following information is a transcription of the old typewritten Decimal System for Interpolating Numbers in STC and in Wing. Folger catalogers used these instructions to derive call numbers for STC and Wing books before they were enumerated in later editions of those bibliographies.

  • .1
  • .2
  • .3
    • Later editions or issues of 2
      • Begin with .2
        • Use .3 before subdividing .2
        • Reserve (before .15) as long as possible
        • (after .35) without expanding more than 2 places
  • .4
  • .5
  • .6
    • New titles
      • Begin with .5
        • Reserve (before .45) as long as possible
        • (after .65) without expanding more than 2 places
          • Expand according to principles of 2.1-2.9, see below
  • .7
  • .8
  • .9
    • Earlier editions or issues of 3
      • Begin with .8
        • Use .9 before subdividing .8
          • Reserve (before .75) as long as possible
          • (after .95) without expanding more than 2 places

All interpolated numbers are decimals capable of indefinite expansion.

Expansion of new title numbers as follows (examples):

3.5 new title between 3 and 4

  • 3.51
  • 3.52
  • 3.53
    • Later editions or issues of 3.5
  • 3.54
  • 3.55
  • 3.56
    • New titles bewteen 3.5 and 3.6
  • 3.57
  • 3.58
  • 3.59
    • Earlier editions or issues of 3.6

3.55 new title between 3.5 and 3.6

  • 3.551
  • 3.552
  • 3.553
    • Later editions or issues of 3.55
  • 3.554
  • 3.555
  • 3.556
    • New titles between 3.55 and 3.56
  • 3.557
  • 3.558
  • 3.559
    • Earlier editions or issues of 3.56