Over 16,000 historical markers are spread across the Texas landscape. Jackson County will soon add one to the list — dedicating a new marker outside the county courthouse in Edna tomorrow. The marker will commemorate the 1954 U.S. Supreme Court case Hernandez v. Texas. The event is at 1 p.m. at the Jackson County Courthouse. Several dignitaries and scholars, as well as a few descendants of two of the civil rights lawyers who argued the case, will be there. A reception in the courthouse will follow the dedication.