A long time ago a member of this site wrote a book.  I believe he may have owned an agency or he was a photographer.  The book was a guide to commercial modelling.  The man may have moved to or lived in Texas.

Any help?

Do you seek Roger Talley?:
https://www.modelmayhem.com/Emeritus

Here is his book:
https://www.amazon.com/Professionals-Gu … 0615146775

Definitely Roger Talley's book that you're thinking of OP... but member Christie Gabriel (https://www.modelmayhem.com/SelfMadeModel) also wrote "The Self-Made Model: Success Without Agencies" which is available on Amazon here: https://www.amazon.com/Self-Made-Model- … 0985038918