Ok Kevin From Texas, you think that your the only one with accuracy on this forum, well here you go. According to Wikipedia.com here ARE the building heights:
Building heights:
750 ft (229 m) to top of the antenna.
622 ft (190 m) to top of roof.
579 ft (176 m) to indoor observation deck.
560 ft (170 m) to outdoor observation deck.
550 ft (168 m) to restaurant and stationary level.
The tower was the tallest observation tower in the United States from 1968 until 1996, when the Las Vegas Stratosphere Tower was completed.
It is
still the 2nd tallest freestanding and oservation tower in the United States and the
tallest freestanding and observation tower in the State of Texas. It is ahead of the Space Needle in Seattle which is 605 feet, but it is behind the Stratosphere in Las Vegas which comes in at 1149 feet tall.