The Illinois Machine Sublending Agency (IMSA) is a division of the Illinois Network of Talking Book and Braille Libraries.  Funding is provided through the cooperation of the National Library Service for the Blind and Physically Handicapped/Library of Congress and the Institute of Museum and Library Services as well as the Illinois State Library.

The primary responsibility of IMSA is to maintain Talking Book equipment and accessories and to issue Talking Book equipment and accessories to Illinois residents who are registered for the service.  IMSA is also the support center for patrons in need of assistance with the Braille and Audio Reading Download (BARD) service.

Illinois residents outside of Chicago should contact the Illinois Talking Book Outreach Center at 800-426-0709 or info@illinoistalkingbooks.org.  Chicago residents should contact the Chicago Public Library Talking Book Center at 800-757-4654 or tbc@chipublib.org.