University of Illinois at Urbana-ChampaignInfrared; By U of I photography by the University of Illinois Committee on Aerial photography; Scale 1:5300 (1:5300)JPEGoai:digital.library.illinois.edu:ee788220-8a10-0137-6d99-02d0d7bfd6e4-c806engPublicStereogram No. 806 - Water Purification PlantImageryIllinois--Champaign CountyIllinois1969-09University of Illinois Urbana-Champaign