The Center for Maximum Potential Building Systems (CMPBS) "is a non-profit sustainable design and appropriate technology firm engaged in education, research, and demonstration activities." This page of the CMPBS Web site has a large collection of publications and presentations available for download. The documents have publication dates ranging from 1972 to present and topics ranging from building materials to city development methodologies. All of the publications are free, however the CMPBS does encourage donations. Several current projects in which the center is currently involved are summarized in other sections of the CMPBS Web site.