During the 1930’s, the Works Progress Administration played a large role in Poteau, Heavener, and Wister. In Poteau, there are a large number of WPA projects that are quite fascinating. The tour, located in the link below, goes into depth on the different projects in town.
In Heavener, there are several WPA projects as well, however, none are as complex as those in Poteau. Still, they are worth checking out.
Wister has probably the most extensive network of WPA malaria ditches to be found. Centered mainly around the downtown district, the ditches are some of the best preserved examples in Southeast Oklahoma.