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300 $$a 1 linear foot $$a (2 boxes)
300 $$a 300 $$a 1.25 linear feet $$a (3 boxes)
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Expanding a 300 and using multiple 300 fields
If the collection includes material that might require reformatting and/or conservation in the future it should be mentioned in the extent based on the following rule:
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DACS 2.5.6: "…qualify the statement of physical extent to highlight the existence of material types that are important"
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Therefore, as of 2014, the Manuscript Section is capturing the following information in the 300 field for statistical purposes [reports will be run in ALEPH to capture these statistics]:
- Total extent in linear feet
- Extent of photographic material
- Extent of audio/visual material
- Extent of digital material
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If there is easily measurable material, of significant amount (over 10 items) it should be split-out and recorded in its own 300 field.
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Examples of use of multiple 300s:
300 $$a 1.5 linear feet $$a (3 boxes)
300 $$3 Includes photographs: $$a .5 linear feet $$a (1 box)
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300 $$a 10 linear feet $$a (6 boxes, $$a13 volumes)
300 $$3 Includes audiocassettes: $$a .5 linear feet $$a (40 items)
300 $$3 Includes negatives: $$a .1 linear feet.
300 $$3 Includes film reels: $$a .2 linear feet $$a (10 reels)
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300 $$a 5 linear feet $$a (5 portfolio boxes)
300 $$3 Includes prints: $$a (25 items)
300 $$3 Includes photographs: $$a (12 items)
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300 $$a 7 linear feet $$a (7 boxes)
300 $$3 Includes CD-Rs: $$a8 items $$a (5400 MB)
300 $$3 Includes floppy disks: $$a2 items $$a (2.8 MB)
$$b Other physical details. If the material is not easily measurable (such as single photographs scattered throughout correspondence files), but is definitely worth mentioning [i.e. over 10 items], then mention the format word within the inclusive 300 field in a subfield $$b and use the word “uncounted”
Examples of materials not easily measurable, but important enough to mention:
300 $$a 1.25 linear feet $$a (3 boxes) $$b includes uncounted photographs, $$b includes uncounted negatives.
The types of materials that should be highlighted include [list may be added to]:
From AAT:
audiotapes
audiocassettes
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