La. R.S. 25:10

The executive secretary shall, from time to time when called upon, give supervisory service and advice to all parish, institutional, and public libraries in the state, except law libraries. He shall also require such libraries to file annually, and at such other times as he may deem necessary, reports giving such statistical and other information as he may require. These reports shall be filed with the State Library of Louisiana on or before the thirty-first day of January of each year for the preceding calendar year.