High School Teacher Librarian Tom Kahn alerted me to a library iPhone application by Boopsie Inc. The example showcased here is the Santa Clara County Library.
This company was also a sponsor, presenter, and mobile provider at the October 14, 2009 LITA Conference. LITA is the Library Information and Technology Association, a division of the American Library Association. They are eager for libraries to become "mobilized" with help from Boopsie. See the presentation below: