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.