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For file boxes and cartons, file unit numbers consist of the container number, followed by a period, then the folder (or item) number (e.g., 10.1). See pages 24-27 for specific examples.
Volumes
Small- and medium-sized volumes are stored in individual folders (one volume per folder), and filed in Hollinger boxes. Although the folder description should specify that the item is a volume, the file unit number does not. Bound volumes housed unfoldered in in Hollinger or in oversized boxes, however, receive a "v" following the number (e.g., 1OB.1v) since they are not inside folders; they follow the same numbering conventions as folders.
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Carton#.folder# Carton 1.1
File box#.folder# File box 1.1
FD.folder# Folio folder folder FD.1
F+D.# Folio+ folder folder F+D.1
OD.# Oversize folder folder OD.1
SD.# Supersize folder folder SD.1
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#FB.# Folio box box 1FB.1 (or 1FB.1v for volume)
#F+B.# Folio+ box box 1F+B.1 (or 1F+B.1v for volume)
#OB.# Oversize box box 1OB.1 (or 10B.1v for volume)
#CB. Card file box (any size) 1CB [description only; there are no internal units]
#Roll Roll box (any size) 104 Roll
Mem.# Memorabilia** Mem.1
CD-#.# Compact disc* CD-13.1
MP-#.# Motion picture* MP-45.1
T-#.# Audiotape* T-249.1
Vt-#.# Videotape* Vt-269.1
Phon-#.# Phonograph record* Phon-65.1
DVDs DVD* DVD- #
E.# Electronic files (web sites, digital photos) E.1
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