Master copy and use copy created according to Benchmark for Faithful Digital Reproductions of Monographs and Serials. Version 1. December 2002. Digital version conforms to: http://purl.oclc.org/DLF/benchrepro0212
Electronic reproduction. Vol. 1 and 2. New York, N.Y. : Columbia University Libraries, 2006. JPEG use copy available via the World Wide Web. Master copy of vol. 1 stored locally on  DVDs#: ldpd_5949073_001 01, 02, 03. Master copy of vol. 2 stored locally on  DVDs#: ldpd_5949073_002 01, 02, 03.