American Memory: Technical summary
Multiformat collection of selected materials that documents the
historical formation and cultural foundations of the movement to conserve
and protect America's natural heritage. The conservation movement is
seen through the wide lens of cultural history, and includes both the
essential documents of conservationism itself--its major philosophical
statements, for example, and its legislative landmarks--and works that
represent the most important facets of conservationism's generative
cultural milieu, such as the literature of scenic tourism, or of popular
ornithology. For the same reason, we have designed the collection to
reflect as closely as possible a historically accurate balance among the
perspectives of different social classes and geographic regions, between
public and private initiatives and
between state and Federal leadership, and to attend appropriately to
chronology by including seminal works and first editions whenever
possible. In the second place, the collection has been developed in order
to replicate for users in the electronic environment something of the
experience of research in the Library of Congress itself. Accordingly,
the collection's structure retains distinctive attributes of the
Library's custodial structure, and its editorial apparatus is intended to
provide the kind of archival and contextual guidance that might be
offered by an informed and helpful reference librarian with subject
expertise in the scholarship of American environmental history and
intimate familiarity with the materials in her care, while leaving users
largely free to form their own analyses, judgments and interpretive
conclusions about the documents they find.
- Source collection (for original materials)
- Technical features
Varied materials in many formats that bear on the same broad topics or
themes, requiring intellectual effort to tie the threads together;
extensive searchable text for books; extensive federal legal documents in
page image-form that would benefit from searchability; historical
materials for which one could draw strong parallels with topics found in
other, non-Library of Congress resources.
- Original material formats
- Books, other printed matter, and typescripts (reproduced as searchable
text and images)
- Printed matter and manuscripts (reproduced as images only)
- Pictorial items
- Motion pictures
- Number of original items
793 (60 books and pamphlets, 140 Federal statutes and Congressional
resolutions, 34 additional legislative documents, 23 excerpts from the
Congressional Globe and the Congressional Record, 360 Presidential
proclamations, 172 prints and photographs, 3 historic manuscripts, and a
two-part motion picture.)
- Status of collection
- Available online.
- Public access:
- The Library is not aware of any U.S. copyright or any other
restrictions for the documents in this collection. See notes on rights
restrictions provided by the Library to users of this collection.
Aids to intellectual access
- Type & granularity
- MARC bibliographic records. Bib. records typically describe a single
item, which may be represented by multiple files.
bibliographic display in American Memory.
- Linking to digital reproductions
- Bibliographic record contains identifier
used in names for directories
(for documents) or files (for other formats).
Numbering system in place to link searchable text to page images and
directory for document converted to searchable text.]
Numbering system and page-turning dataset in place to sequence and
present page-images for documents reproduced only as images.
directory for document converted only to page-images.]
Multisegment motion picture filenames end "s1," "s2" to indicate
segmentation; identifiers for each segment also appear in bib record.
Total file-space for digital reproductions:
(searchable text + page-images)
|Archival text file
version images for
||Filename no hyphen
||Filename includes hyphen|
||TIFF Group IV
||TIFF or PCX|
||300 dpi (random-pattern
|Archival page images (printing
||Service page images (page-turning)
||Filename extension ".tif"
||Filename extension ".gif"
||TIFF Group IV
||Filename ends "u.tif"
||Filename ends "r.jpg"
||Filename ends "t.gif"
||Filename ends "t.tif"|
|Tonal resolution (grayscale)
|Tonal resolution (color)
|File size (grayscale)
|File size (color)
||Filename extension ".mpg"
||Filename extension ".mov"
||Filename ends "t"|
||ca. 1.2 Mbits/sec
||ca. 640 Kbits/sec
||not yet available|
Library of Congress contribution to Digital Libraries Initiative - Phase II