N-1-1-020.20.1 Internet OPACs, by Billy Barron*, For the first issue of the Internet Society newsletter, I thought would start with the Internet Online Public Access Catalogs (OPACs), the most well known Library Science application of the Internet. OPACs primarily offer access to bibliographic information. Uses of this information range from InterLibrary Loan to Research to collection development. Currently, the bulk of the OPACs on the Internet are in the English speaking countries. Hopefully, this will change in the near future. According to my sources, we should see a good number of libraries in Finland soon on the network. The primary mailing list on OPACS is called PACS-L. It is housed on UHUPVM1.UH.EDU or UHUPVM1.BITNET. Subscriptions may be obtained by sending mail to LISTSERV on that node with "SUBSCRIBE PACS-L firstname lastname" as the body of the letter. Many sources of information on accessing Internet OPACs are available via anonymous FTP. I try to maintain a fairly complete collection on FTP.UNT.EDU in the library directory. The guide of the most general use is my own which is in the filenames starting with LIBRARIES. *VAX/Unix Systems Manager, University of North Texas