Scope and Contents The Platte River Development Association Collection contains material documenting the activities of an unincorporated oil company dating 1920 to 1926 and a privately owned supply company dating 1911-1919. It contains the general business records of the old Platte River Development Association and the new Platte River Drilling Association. It contains the general business records of the old Platte River Development Association and the new Platte River Drilling Association. Included are both...