1. Order Amending Regulations of the Department of Environmental Conservation Collection: City Planning and Landscape Architecture (CPLA) Format: Register Publication Date: 1974-04-08 Location: City Planning & Landscape Architecture Reference and Resource Center, Funk Library, University of Illinois Box: 28; Folder: 43 CPLA Sub-Collection: General Subjects
2. Register 42 Title 18 Environmental Conservation Chapter 50 Air Quality Control Collection: City Planning and Landscape Architecture (CPLA) Format: Register Publication Date: 1972-07 Location: City Planning & Landscape Architecture Reference and Resource Center, Funk Library, University of Illinois Box: 28; Folder: 43 CPLA Sub-Collection: General Subjects