"Report of the Superintendent of the U. S. Coast and Geodetic Survey Showing the Progress of the Work during the Fiscal Year Ending with June, 1881", U.S. Coast & Geodetic Survey
This volume contains a report of field operations for the year, 18 appendices and 32 folded charts. Of particular interest, Appendix 11 is a report on the oyster beds of the James River and of Tangier and Pocomoke Sounds, Maryland and Virginia, accompanied by two charts and several illustrations.