The document discusses materials in the ACES Funk Library collection related to public parks from the early 20th century. It references works by Frederick Law Olmsted and Daniel Burnham, two influential figures in urban planning and design. The collection includes volumes that discuss the definition and importance of parks for city residents at that time, providing recreation, health benefits, and respite from urban life. It also notes plans for specific parks in Chicago and Champaign, Illinois from that era.