An address on the propriety of continuing the state Geological survey of California, [electronic resource] delivered before the Legislature at Sacramento, Thursday evening, January 30th, 1868:
Electronic text and image data. Ann Arbor, Mich. : University of Michigan, Digital Library Initiatives, 2000. Includes both TIFF files and keyword searchable text. [Making of America] This volume is made possible by a grant from the Andrew W. Mellon Foundation as part of Making of America IV: the American voice, 1850-1877.