ultimately, it is the research worker ‘s obligation to assess copyright or other use restrictions and obtain permission from third base parties when necessary before publishing or otherwise stagger materials found in the Library ‘s collections .
For information about regurgitate, publication, and citing material from this solicitation, vitamin a well as entree to the original items, see : Cartoon Drawings – Rights and Restrictions Information
- Rights Advisory:
May be restricted. For information see “ Edwin Marcus Rights and Restrictions Information, ” hypertext transfer protocol : //lcweb.loc.gov/rr/print/res/393_marc.html
- Reproduction Number:
- Call Number:
cadmium 1 – Marcus, no. 109 ( A size )
- Access Advisory:
If an image is displaying, you can download it yourself. ( Some images display only as thumbnails outside the Library of Congress because of rights considerations, but you have access to larger size images on site. )
Read more: Dual_EC_DRBG – Wikipedia
alternatively, you can purchase copies of assorted types through Library of Congress Duplication Services .
If a digital image is displaying: The qualities of the digital image partially
depend on whether it was made from the original or an intermediate such as a copy negative or
transparency. If the Reproduction Number field above includes a reproduction number that starts
with LC-DIG…, then there is a digital image that was made directly from the original
and is of sufficient resolution for most publication purposes.
If there is information listed in the Reproduction Number field above:
You can use the reproduction number to purchase a copy from Duplication Services. It will be
made from the source listed in the parentheses after the number.
If entirely black-and-white ( “ b & tungsten ” ) sources are listed and you desire a copy showing tinge or tint ( assuming the original has any ), you can broadly purchase a quality replicate of the original in color by citing the Call Number listed above and including the catalogue criminal record ( “ About This Item ” ) with your request .
If there is no information listed in the Reproduction Number field above:
You can generally purchase a quality copy through Duplication Services. Cite the Call Number
listed above and include the catalog record (“About This Item”) with your request.
price lists, contact information, and order forms are available on the Duplication Services Web site .
Access to Originals
Please use the following steps to determine whether you need to fill out a call slip in the Prints
and Photographs Reading Room to view the original item(s). In some cases, a surrogate (substitute image) is
available, often in the form of a digital image, a copy print, or microfilm.
Read more: A Few Thoughts on Cryptographic Engineering
Is the item digitized ? ( A thumbnail ( small ) prototype will be visible on the left. )
Yes, the item is digitized.
Please use the digital image in preference to requesting the original. All images can be
viewed at a large size when you are in any reading room at the Library of Congress. In some
cases, only thumbnail (small) images are available when you are outside the Library of
Congress because the item is rights restricted or has not been evaluated for rights
As a preservation measure, we generally do not serve an original item when a digital image
is available. If you have a compelling reason to see the original, consult with a reference
librarian. (Sometimes, the original is simply too fragile to serve. For example, glass and
film photographic negatives are particularly subject to damage. They are also easier to see
online where they are presented as positive images.)
- No, the item is not digitized. Please go to #2.
- Yes, the item is digitized.
Do the Access Advisory or Call Number fields above indicate that a non-digital surrogate exists, such as microfilm or replicate prints ?
Yes, another surrogate exists. Reference staff can direct you to this
- No, another surrogate does not exist. Please go to #3.
- Yes, another surrogate exists. Reference staff can direct you to this
If you do not see a thumbnail image or a reference to another surrogate, please fill out a call slip in
the Prints and Photographs Reading Room. In many cases, the originals can be served in a few minutes.
Other materials require appointments for later the same day or in the future. Reference staff can
advise you in both how to fill out a call slip and when the item can be served.
To contact Reference staff in the Prints and Photographs Reading Room, please use our Ask A Librarian service or call the recitation room between 8:30 and 5:00 at 202-707-6394, and Press 3 .