MARYLAND GEOLOGICAL SURVEY 115
LIST OF UNPUBLISHED ATLAS SHEETS IN THE STATE OF MARYLAND. ¹

	Sheet Name. Choptank....	State. Md.	Proportional. 1: 125000	Inch to 3t. M. 2	Contour Interval. 20		Surveyor. A. E. Murlin, F. Sutton, J. H. Wheat,	Year of Survey. 1891 1895
							J. W. Thom,
	Dover........	Md. & Del.	1: 125000	2	20		H. S. Wallace, J. W. Thom,	1896
	Elkton......	Md., Del. & Pa.	1: 62500	1	20		H. S. Wallace, J. W. Thom,	1896
	Patuxent,	Md.	1: 125000	2	20		D. J. Howell, A. E. Murlin,	1886 1897
	Patapsco...	"	1: 125000	2	20		S. H. Bodfish, A. E. Murlin,	1887 1890
							A. E. Murlin,	1891
	Tolchester	"	1: 125000	2	20		F. Sutton,	1895
							J. W. Thom,
								1890
	St. Marys...	Md. & Va.	1: 125000	2	20		A. E. Murlin,	1895

¹ The surveys for these sheets have been completed and the maps will be published
at an early date.

LIST OF PUBLISHED GEOLOGIC FOLIOS IN THE STATE OF MARYLAND.

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² The Geologic Folios can be obtained at the price of 25 cents a folio by addressing
The State Geologist, Baltimore, Md., or The Director U. S. Geological Survey, Washington,
D. C. The location of the Folios is shown upon the accompanying map.

OPERATIONS OF THE UNITED STATES COAST AND GEODETIC SURVEY IN

MARYLAND. ³

The following memoranda relative to the history of the United
States Coast and Geodetic Survey operations in the state of Maryland,
giving dates of triangulation, successive charts, etc., are herewith
presented.

³ Prepared under the direction of the Superintendent of the U. S. Coast
and Geodetic Survey.