2023 Pic of Robert
OST Logo

Welcome to the Oklahoma Steam Threshing and Gas Engine Association website!  We believe we are one of the best organizations in the state.  Our members enjoy this great hobby of rural farm life by working on and exhibiting antique farm equipment and machinery.  Our main categories are steam engines, gas tractors and gas engines, but we have lots of other areas of interest as well.  Please look through our site and see all the fun we have together. 


We hold our annual show in Pawnee, Oklahoma during the first Friday, Saturday and Sunday in May.  But don't think that is all we do.  We have been seen in Christmas parades and even at the Capitol in Oklahoma City.  We support other organizations by taking our equipment to different events such as Route 66 Flywheelers in Catoosa, OK., Wilson County Old Iron Days in Fredonia, Kansas, Major County Historical Society Threshing Bee in Fairview, OK., and many more.  We also made our debut at the Tulsa State Fair in 2007 and were there again in 2008, 2011, 2013, 2014, and 2015.


We invite you to come be part of the fun and help us enjoy our hobby.  You don't have to have equipment to join, just interest and enthusiasm.  There are lots of areas of our organization that have a place for you to share in the fun!


Robert G. Marrs, Jr.

2023/2024 President, OSTGEA

Welcome to the official site of the

Oklahoma Steam and Gas Engine Show!