lccn.loc.govFrequently Asked Questions - LCCN Permalink

LC Catalog Home Search Options Browse Advanced Search Keyword Search Search History About the Catalog opens in a new window Ask a Librarian opens in a new window Help & FAQs Frequently Asked Questions opens in a new window Navigation Help opens in a new window Search/Browse Help opens in a new window Print/Save/Email/Cite Help opens in a new window Feedback LC Authorities opens in a new window Additional Catalogs Archival Finding Aids Copyright Office Catalog E-Resources Online Catalog Handbook of Latin American Studies LC Linked Data Service NLS Online Catalog Primo Central Prints and Photographs Online Catalog Sound Online Inventory and Catalog (SONIC) Thesauri & Controlled Vocabularies Z39.50 Gateway to the LC Catalog Library of Congress Home LC Catalog Search Search Options Browse Advanced Search Keyword Search Search History Yes No Frequently Asked Questions about LCCN Permalink General Questions About LCCN Permalink What are LCCN Permalinks? LCCN Permalinks are persistent URLs for bibliographic records in the LC Catalog and authority records in LC Authorities . These links are constructed using the record’s LCCN (or Library of Congress Control Number), an identifier assigned by the Library of Congress to bibliographic and authority records. LCCN Permalinks are also available for citation records in the Handbook for Latin American Studies (HLAS) . How can I use LCCN Permalinks? The LCCN Permalink web service offers an easy way to cite and link to bibliographic records in the LC Catalog, authority records in LC Authorities, and citation records in the Handbook for Latin American Studies (HLAS). You can use an LCCN Permalink anywhere you need to reference an LC bibliographic, authority, or HLAS citation record — in emails, blogs, databases, web pages, digital files, etc. How do I bookmark an LCCN Permalink record display? Just right-click on the LCCN Permalink web page and select appropriate options in : XML Format Qualifier BIBFRAME /bibframe2 MARCXML /marcxml MODS /mods Dublin Core /dc Are MARC21 records available from LCCN Permalink? LCCN Permalink bibliographic record displays provide a link to the MARC21 UTF-8 record in the LC Catalog. Clicking on this link triggers browser-dependent options for locally saving the MARC21 record. How does LCCN Permalink normalize LCCNs? LC Permalink uses info:lccn URI specifications to normalize the standard LCCN syntax . Each LCCN has three components: a prefix , year , and serial number . Prefixes may be blank, or they may contain from one to three lowercase alphabetic characters (maintained in a controlled list). Year information is either two or four digits — two digits for LCCNs assigned through 2000, four digits for LCCNs assigned 2001 and later. LCCN serial numbers contain six digits. The info:lccn normalization removes hyphens, left-fills serial numbers with zeros, and removes spaces in LCCN prefixes. The resulting LCCNs may look different from LCCNs appearing in the MARC 010 fields of bibliographic records, in Cataloging-in-Publication data, or on printed catalog cards. If you are looking for ... Enter the LCCN as ... LCCN 89-456 no prefix assigned before 1/1/2001 89000456 Omit spaces and hyphens Make sure your LCCN is 8 characters long: Two numbers (representing a year) followed by six serial numbers Add leading zeros if there are fewer than six serial numbers LCCN 2001-1114 no prefix assigned after 12/31/2000 2001001114 Omit spaces and hyphens Make sure your LCCN is 10 characters long: Four numbers (representing a year) followed by six serial numbers Add leading zeros if there are fewer than six serial numbers LCCN gm 71-2450 LCCN n 79-18774 LCCN sh 85026371 1-3 character alphabetic prefix assigned before 1/1/2001 gm71002450 n79018774 sh85026371 Omit spaces and hyphens Make sure your LCCN is 9-11 characters long: Two numbers (representing a year) followed by six serial numbers Add leading zeros if there are fewer than six serial numbers LCCN sn2006058112 LCCN n 2011033569 LCCN sh2006006990 1-2 character alphabetic prefix assigned before 12/31/2000 sn2006058112 n2011033569 sh2006006990 Omit spaces and hyphens Make sure your LCCN is 11-12 characters long: Four numbers (representing a year) followed by six serial numbers Add leading zeros if there are fewer than six serial numbers My LCCN Permalink display contains some strange characters, such as boxes. Why? While authority records from LC Authorities will display correctly for most languages without changing your preferred browser settings, you may see boxes or incorrectly formatted characters if your browser is set to display mainly English language web pages. LCCN Permalink displays are best viewed using Unicode fonts and the most current browser and operating system software. Search Results and Output What should I do when I receive a system error message? If LCCN Permalink is temporarily unavailable, please first try to refresh the display in your browser. If problems persist, please send a problem report to the Library through Ask a Librarian . What are the permissible rates for accessing LCCN Permalink? As an SRU-based web service supporting the LC Catalog metadata, LCCN Permalink must ensure that access to the Catalog’s SRU/Z39.50 gateways remain accessible to all Library patrons. Current LCCN Permalink guidelines do not permit robots and recommend that software programs submit a total of no more than 10 requests per minute, regardless of the number of machines used to submit requests. The Library reserve the right to terminate programs that require more than 24 hours to complete and to block IP addresses that fail to honor the LCCN Permalink’s robots.txt file. See: https://www.loc.gov/legal/#security How do I obtain an LCCN for my publication? The Library of Congress offers U.S. book publishers the service of assigning LCCNs to their prepublication titles through the Preassigned Control Number (PCN) Program . Qualified publishers may also receive an LCCN as part of CIP data issued by the Cataloging in Publication (CIP) Program . LCCNs are also assigned by the Library of Congress to items added to the Library’s collections or cataloged as part of the cooperative CONSER program. As noted above, the assignment of an LCCN by the Library of Congress does not automatically ensure that a publication will be selected for Library’s collections. Where can I go for help if this FAQ does not resolve my question or problem? If you are a researcher in a Library of Congress reading room, please ask the reference librarian on duty for help. You may also report problems by contacting the Library of Congress through Ask a Librarian . Subscribe (Patron Services) RSS Email Ask a Librarian Feedback Speech Enabled Accessibility Legal Inspector General External Link Disclaimer USA.gov...