Transco tower original tenants

Around 1989 my aunt worked at transco tower for a company that, I believed, shut down and they laid off everyone.

I swear the name of the company started with a T, but I also swear it wasn’t transco….but I could be wrong.

I know it’s a shot in the dark but anyone have any clue what company it could be? Can’t ask the aunt, she’s been dead since 2021

I have no clue what the company did. I know she came home with tons of boxes of that copy paper that had the perforated strips on the end with tons of holes in them Along with a ton of other office supplies with the name of the company on them when she got laid off