Internet Search - links to six different search engines, and other helpful search sites. Three Rivers Free Net - a web resource for the Pittsburgh and Southwestern Pennsylvania community. This business database has detailed information on over 12.6 million private, public and non-profit U.S. companies. Mt Lebanon Public Library card holders can search ReferenceUSA from a computer outside the library by typing in their library card number (do not use spaces or hyphens). eiNetwork Databases -use POWER Library and other links to find newspaper, magazine and encyclopedia articles; photos; literary criticism; and other great online reference material. -use POWER Library and other links to find newspaper, magazine and encyclopedia articles; photos; literary criticism; and other great online reference material. eiNetwork - links to all the eiNetwork member libraries, more than 70 throughout the county! Librarians' Index to the Internet - a well-organized point of access for reliable, trustworthy, librarian-selected Internet resources Computer & Internet Access and Use Policy