Analysis of information sources in references of the Wikipedia article "Houston Chronicle" in English language version.
At the northern end of today's underground maze, the tunnels provide access to the Chase Tower, the Houston Chronicle and 717 Texas Avenue (formerly known as the Calpine Tower).
"The new complex, formerly the home of the Houston Post, will provide more than 440,000 square feet in seven buildings.[...]The plant at 4747 Southwest Freeway was acquired after the Post closed in 1995, and has for a number of years been the site of the Chronicle's production departments.