The Chronicles of Oklahoma website may help:

http://digital.library.okstate.edu/chronicles

I searched for Gibson stockade and got 106 hits.

There's also a book "The WPA Guide to 1930s Oklahoma" that you can buy for less than $10.00. See addall.com to buy.

This book is also available at 170 libraries in the US. See worldcat.org. If your library doesn't have it, then can get it via InterLibrary Loan.

Good luck!