 It is a one-and-a-half story brick public building described as "Neo-Federal" in style, which served as post office for Jennings from 1915 until 1976.It was renovated and reopened as the headquarters of the Jefferson Davis Parish library system in 1979.Its design is credited to James A. Wetmore, but the NRHP nomination asserts it is "actually the work of Louis A. Simon.