The oldest State Enforcement Agency is the Texas Rangers, founded in 1823 under Stephen Austin.
The Texas rangers are the statewide law enforcement for the state of Texas, They have statewide jurisdictions and are the oldest law enforcement agency in North America.
If you take into consideration the fact that the US Coast Guard is charged with enforcing the nations laws, then it would be THAT agency which began its life as the US Revenue Cutter Service.
The Texas Education Agency is responsible for public education in Texas. The agency is headquartered in the William B. Travis State Office Building in Downtown Austin.
secretary of state
The Texas Ethics Commission can recommend salary increases for legislators. This state agency was established in 1991, and is headquartered in Austin, Texas.
The State Bar of Texas is an agency of the judiciary under the administrative control of the Texas Supreme Court. The Texas State Bar is responsible for assisting the Texas Supreme court, who are practicing law in Texas.
The Texas Parks and Wildlife Commission
You must be thinking of "Juneteenth". It commemorates the notice of Freedom of slavesreaching the State of Texas.
The Texas Parks and Wildlife Commission
The Texas Parks and Wildlife Commission
Texas Commision on Environmental Quality (TCEQ)