American Memory:  Technical summary

Core Collection Images

Selected Documents Celebrating the Manuscript Division's First 100 Years


Collection Overview

Ninety-two manuscript and pictorial documents selected from the papers of leaders from all branches of American government, military officers and diplomats, reformers and political activists, artists and writers, and scientists and inventors which illustrate the country's evolution and humanize larger events from the fifteenth century to the mid- twentieth century.
Source collection
Special selections from the holdings of the Manuscript Division known as the Core Collection.
Technical features
Images only. Mixed source characteristics--handwritten, typescripts, odd-sized documents, some color. Bibliographic records linked via z39.50 to source collection catalog record in MUMS.
Original material formats
Number of original items
Status of collection
Available online as of November 1997.
Public access:
The Library will identify the owners of rights associated with items in this collection. See notes on rights and restrictions provided by the Library to users of this collection.

Aids to intellectual access

Type & granularity
Database with title, enriched legend, uncontrolled subject terms, source collection catalog record link and link to page turning image-set database. Each database record describes a single item.
Sample bibliographic display in American Memory. Records used to derive menu-style lists by chronology and subject.
Linking to digital reproductions
Database record and menus contain identifier used in "directory name" for each metaobject representing an item. [Sample directory] Numbering system and page-turning dataset in place to sequence and present images. Filename indicates preview image; filename extension differentiate types.

Digital reproductions

Total file-space for digital reproductions: 4 Gbytes

Manuscript and Pictorial Archival page-image Service page-image Image for page-turning Preview image
Marker Filename extension ".tif" Filename extension ".jpg" Filename extension ".gif" Filename ends "t.gif"
Formats TIFF uncompressed JPEG/JFIF GIF GIF
Tonal resolution 24 bit (color)
8 bit (grayscale)
8 bit (grayscale) 8 bit (grayscale) 8 bit (grayscale)
Spatial resolution
300 dpi 300 dpi 700x700 pixels 150x150 pixels
Quantity (approx) 350 350 350 90
Sample N/A Sample service Sample page-turning Sample preview

Library of Congress contribution to Digital Libraries Initiative - Phase II [Site Map]
Collections available: [List] [Rights] [Samples] [Handover]
Technical notes: [Documents] [Images] [Maps] [Sound Recordings] [Motion Pictures]