Region IV Southern Tagalog Region Librarians Council (STRLC) is composed of librarians from the eleven (11) provinces and the cities therein which constitute Southern Tagalog namely: Batangas, Cavite, Laguna, Marinduque, Occidental Mindoro, Oriental Mindoro, Palawan, Quezon, Rizal and Romblon.

Visit their website at http://plaistrlc.blogspot.com/