Apparently without warning, the American Library Association has changed the format for its journal URLs, and the old URLs are not redirected to the new ones.
Here's an example from version 73 of the Scholarly Electronic Publishing Bibliography ("Fair Use after CONFU" from College & Research Libraries):
- Old URL:
http://www.ala.org/ala/acrl/acrlpubs/crljournal/
backissues1998b/may98/candrlmay1998editorial.cfm - New URL:
http://www.ala.org/ala/mgrps/divs/acrl/publications/
crljournal/1998/may98/candrlmay1998editorial.cfm
ALA journal URLs were removed from version 74 of SEPB, and will be restored in version 75 (unless there are further changes). Since ALA does not include article page numbers in journal sites such as College & Research Libraries, they may be missing from some SEPB references, reflecting the time lag between issue publication and inclusion in standard indexing tools that I can access.
A similar issue has arisen with archived issues of RLG DigiNews, a ceased e-journal archived by OCLC.
Here's an example from version 73 of SEPB ("Benchmarking Conversion Costs: A Report from the Making of America IV Project"):
- Old URL:
http://digitalarchive.oclc.org/da/ViewObjectMain.jsp?fileid=0000070513:000006280584&reqid=5141#feature2 - New URL:
http://worldcat.org/arcviewer/1/OCC/2007/08/
08/0000070519/viewer/file706.html#feature2
RLG DigiNews articles were removed from version 74 of SEPB, and they will be restored in a future version. (SEPB previously included virtually all articles published in this fine journal.)