The State Library of Louisiana, all public libraries (state, parish, and municipal), and all other libraries which may be willing to participate shall send to the Union Catalog of Louisiana Items, at the State Library of Louisiana at Baton Rouge, one main entry card for each Louisiana item added subsequently to each of their respective libraries after the establishment of the Union Catalog.  

Acts 1956, No. 361, §5; Acts 1991, No. 938, §2.