Federal project. Book-length manuscripts, research and project reports (1937–1941) and administrative records (1937–1941) generated by the WPA Historic Sites and Federal Writers’ projects for Oklahoma during the 1930s. Arranged by county and by subject, these project files reflect the WPA research and findings regarding birthplaces and homes of prominent Oklahomans, cemeteries and burial sites, churches, missions and schools, cities, towns, and post offices, ghost towns, roads and trails, stagecoaches and stage lines, and Indians of North America in Oklahoma, including agencies and reservations, treaties, tribal government centers, councils and meetings, chiefs and leaders, judicial centers, jails and prisons, stomp grounds, ceremonial rites and dances, and settlements and villages. Also included are reports regarding geographical features and regions of Oklahoma, arranged by name, including caverns, mountains, rivers, springs and prairies, ranches, ruins and antiquities, bridges, crossings and ferries, battlefields, soil and mineral conservation, state parks, and land runs. In addition, there are reports regarding biographies of prominent Oklahomans, business enterprises and industries, judicial centers, Masonic (freemason) orders, banks and banking, trading posts and stores, military posts and camps, and transcripts of interviews conducted with oil field workers regarding the petroleum industry in Oklahoma.