Harvard University Archives Helper for ArchivesSpace Extents

Order	Canonical form	Characteristics	Category	Harvard source
1	cubic feet		Space occupied	EAD ingest
2	linear feet		Space occupied	EAD ingest
3	boxes		Container	EAD ingest / AT extent list
4	folders		Container	EAD ingest / AT extent list
	45 rpm records		AV carrier	EAD ingest
	78 rpm records		AV carrier	EAD ingest
	audiocassettes		AV carrier	EAD ingest / AT extent list
	audiotape reels	audio recording on tape medium housed on reel without cassette	AV carrier	EAD ingest
	audiotapes	audiotape (unspecified as to housing on reel or cassette, unspecified as to analog or digital)	AV carrier	EAD ingest / AT extent list
	CD-ROMs	compact discs that are read-only, typical of commercially distributed music CDs	CD/DVD	EAD ingest
	CD-Rs	compact discs that can be written only once but read many times	CD/DVD	EAD ingest
	compact discs	compact discs with no specification as to read-write characteristics	CD/DVD	EAD ingest / AT extent list (as CDs)
	digital audio files		Digital (no media)	EAD ingest
	digital audio tapes	digital audio recording on tape medium, typically cassettes	AV carrier	EAD ingest
	digital images		Digital (no media)	EAD ingest
	document boxes		Container	EAD ingest
	DVDs	read-only compact discs that can hold a minimum of a full-length movie, typical of commercially distributed movies	CD/DVD	EAD ingest / AT extent list
	DVDs (DVD-R)	a DVD compact disc that can be written only once but read many times	CD/DVD	EAD ingest
	files (digital files)		Digital (no media)	EAD ingest
	film reels		AV carrier	EAD ingest
	floppy disks	floppy disks (unspecified as to size)	Digital carrier	EAD ingest / AT extent list
	floppy disks (five-and-one-quarter inch)		Digital carrier	EAD ingest
	floppy disks (three-and-one-half inch)		Digital carrier	EAD ingest
	gigabytes		Digital (no media)	EAD ingest / AT extent list
	glass plate negatives		still image	EAD ingest / AT extent list (as glass negatives)
	images		still image	EAD ingest
	items		Generic	EAD ingest
	leaves		Analog carrier	EAD ingest
	long-playing records	vinyl records characterized by a speed of 33 1⁄3 rpm, a 12 or 10 inch (30 or 25 cm) diameter and microgrooves	AV carrier	EAD ingest
	magnetic disks		Digital carrier	EAD ingest
	microcassettes		AV carrier	EAD ingest
	microfiche		Analog carrier	EAD ingest / AT extent list
	microfilm reels		Analog carrier	EAD ingest / AT extent list
	motion pictures (visual works)	movies or video (unspecified as to film, video, reel, or cassette)	AV carrier	EAD ingest / AT extent list (as motion pictures)
	negatives (photographs)		still image	EAD ingest
	objects		Analog carrier	EAD ingest / AT extent list
	pages		Analog carrier	EAD ingest
	panoramic photographs		still image	EAD ingest
	phonograph records	storage medium for mechanical recording and reproduction of sounds; typically discs or cylinders; no specification as to material, shape, or size	AV carrier	EAD ingest / AT extent list
	photograph albums		still image	EAD ingest / AT extent list
	photographic prints		still image	EAD ingest
	photographs		still image	EAD ingest / AT extent list
	photomechanical prints		still image	EAD ingest
	posters		still image	EAD ingest / AT extent list
	record cartons		Container	EAD ingest
	scrapbooks		Analog carrier	EAD ingest / AT extent list
	sheets		Analog carrier	EAD ingest
	video recordings	video as opposed to film (unspecified as to reel or cassette, digital or analog)	AV carrier	EAD ingest
	videocassettes	videocassettes (unspecified as to standard)	AV carrier	EAD ingest
	videocassettes (U-matic)	analogue recording videocassette 3⁄4 inch wide; cassette sizes vary	AV carrier	EAD ingest
	videocassettes (VHS)	analogue recording videocassette; tape is .5 inch wide; cassettes are 7 3⁄8 × 4 1⁄16 × 1 inch	AV carrier	EAD ingest
	videotapes	video on tape medium (unspecified as to reel or cassette)	AV carrier	EAD ingest / AT extent list
	volumes		Analog carrier	EAD ingest / AT extent list
	zip disks		Digital carrier	EAD ingest