Austin, TX – Celebrate Constitution Day with the Texas State Library and Archives Commission (TSLAC)! Visit the lobby of TSLAC’s headquarters in the Capitol Complex on Tuesday, Sept. 17 between 8 a.m. and 5 p.m. and pick up a free, pocket-sized version of the U.S. Constitution. The Lorenzo de Zavala State Archives and Library Building houses important state government records and also provides access to federal government publications.