Folder #7. A selection of articles used during the year offering perspectives on the concept of sustainable human system design, 2006 - 2012, Box: 14, Folder: 26. David Lehman's Alternative Community School records, 6901. Division of Rare and Manuscript Collections. https://archives.library.cornell.edu/repositories/2/archival_objects/970613 Accessed September 26, 2026.