Western 2/3 of the Preliminary sketch of "Davis's South Shoal and Other Dangers. "

Sketch of Charleston Harbor showing triangulation by Charles Boutelle.

Title block to "the North Side of Charleston Harbor."

A sketch of "Reconnaissance of Florida Keys, Biscayne Bay & Cards Sound." Sketch F of Annual Report for 1849 showing triangulation completed to 1849.

Hydrographic survey H-240. "Reconnaissance of the West Coast from Monterey to the Columbia River" by the party under Lt. William P. McArthur. .

Preliminary survey H-590 of "The Approaches to D'Wamish Bay, Washington Ter."

Section of the Preliminary survey H-590 of "The Approaches to D'Wamish Bay, Washing Ter." Note Seattle on the east side of the bay.

Sketch F No.4 of "Proposed Base at Cape Florida".

Sketch F No.3 of "Proposed Base at Cape Sable, Florida."

Embracing surveys of the "Farallones Entrance to the Bay of San Francisco, Bays of San Francisco and San Pablo, Straights of Carquines and Suisun Bay and the Sacramento and San Joaquin Rivers" by Cadwalader Ringgold, Commander U.S. Navy. This was a privately produced map as it is inscribed to William H. Aspinwall, Esq.

Hydrographic Survey Sheet No.3 to reconnoissance of the "Western Coast of the United States from Monterey to the Columbia River." See image cgs05068 for a rough draft of this chart.

Chart of "The Farallones and Entrance to the Bay of San Francisco" by Cadwalader Ringgold. This was a privately produced chart to accompany the chart shown in image cgs05073.

View from the chart of "The Farallones Entrance to the Bay of San Francisco" showing an engraved view of a sailing vessel entering the Golden Gate .

Original topographic survey T-941 of "City of San Francisco and its Vicinity" by Augustus F. Rodgers, Assistant Coast Survey. The title block is covered over with a note showing the reservoirs in the area and there are a number of notes that appear to be in George Davidson's handwriting on the bottom of the sheet.

2 views: one view showing "Rosario Strait and Canal De Haro from Gulf of Georgia." while another view showing where "the N.W. Boundary between U.S. and British Columbia Possessions strikes the main land in Simiahmoo Bay, and Range for entering inner Harbor (Spit and Bluff)." These views were probably drawn by either William B. McMurtrie or James Madison Alden while on the CS ship ACTIVE.

Hydrographic survey H-241 of "Coast of California, Point Pinos to Cape Mendocino ." This survey was conducted by Lt. W.P. McArthur on the EWING and includes a pencil sketch of the entrance to the Golden Gate probably by William B. McMurtrie.

Hydrographic survey H-242 of "Coast of California Line of Soundings from Cape Mendocino to Coquille River." This survey was conducted by Lt. William P. McArthur on the CS schooner EWING.

"Mouth of Columbia River" from a preliminary survey, including a view of the Entrance of Columbia River-Cape Hancock or Disappointment E. by N. (compass) 12 Statute Miles." See cgs05094 for preliminary sketch of this area. The survey was conducted by Lt. W.P. McArthur and Lt. Washington Bartlett from the Coast

View of the "Entrance of Columbia River-Cape Hancock or Disappointment E. by N. (compass) 12 Statute Miles." This view was probably produced by William B. McMurtrie. It is notable for its magnificent cloud formations and view of the then perfectly conical Mt. St. Helens.

Sketch J No.8. Preliminary Survey of "Humboldt Bay." Including a view of "Red Bluff, Entrance of the Humboldt Bay S.E. 1/2 E. (Compass) 2 1/2 miles." Surveyed by Lieutenant James Alden, USN.

View of "Red Bluff, Entrance Humboldt Bay S.E. 1/2 E. (Compass) 2 1/2 miles." Probably drawn by William B. McMurtrie.

Topographic survey T-331 of "Galveston Bay from D. Harris' to Lawrence Cove", made by J.M. Wampler in January, February, March, April and May, 1851.

Expanded view of Topographic Survey T-331 of "Galveston Bay". Note little mark above the O in Jacinto. See image cgs05087.

A sketch of a ship was found on Topographic Survey T-331 of "Galveston Bay". This vessel was probably the Coast Survey Schooner NYMPH, under the command of Sub-Assistant J. Morris Wampler who used this vessel for transportation and living quarters during his survey of Galveston Bay. Wampler is one of the few Coast Surveyors who joined the Confederacy during the Civil War.

Sketch of ship discovered on Topographical Survey T-331 of "Galveston Bay". This vessel was probably the Coast Survey Schooner NYMPH, under the comma nd of Sub-Assistant J. Morris Wampler who used this vessel for transportation and Sub-Assistant J. Morris Wampler who used this vessel for transportation Coast Surveyors who joined the Confederacy during the Civil War.

Title Block to the "Hart & City Island" Chart, Harbor of Refuge, from a Trigonometrical Survey of the Coast of the United State

Title Block to the "Richmond's Island Harbor" Chart, Harbor of Refuge, from a Trigonometrical Survey of the Coast of the United States.

Title Block to the "Sachem's Head Harbor" Chart, Harbor of Refuge, from a Trigonometrical Survey of the Coast of the United States.

Sketch J No. 7 of "San Diego Entrance and Approaches" from a Trigonometrical Survey of the United States, depicting sailing directions.

Sketch J No. 6 of "San Francisco Bay" showing surveys of sites for Light Houses and for Military and Naval purposes.

Sketch K of the preliminary survey of the "Mouth of the Columbia River, Oregon Territory" by William P. McArthur. Although not shown, Washington Bartlett did a significant part of this work. A. M. Harrison did the topography in the inset for Cape Hancock. This illustration appeared in the 1850 Annual Report and was the first work done in Oregon Territory. See cgs05081 for finished chart.

Sketch of "Cape Hancock", series 2 of 4

Map of "Cape Hancock, Oregon", showing the proposed site of a Light House. This map was produced by A.M. Harrison, with James Lawson one of the pioneer Coast Survey topographers on the West Coast.

Light House Sketch of "Cape Hancock", series 4 of 4. See image cgs05096.

Sketch of "Charleston Harbor", exhibiting the normal Course and Velocity of the Tidal Current at Flood from observations by Lieut. J.N. Maffitt. This is a fairly sophisticated attempt at showing the nature of tidal flow. John Maffitt among the most knowledgeable and successful of Coast Survey hydrographers. He became a very successful Confederate blockade runners and commerce raider.

Although titled "Track of U.S. Coast Survey Schooner Ewing", this is a preliminary version of the chart of the Mouth of the Columbia River. See image cgs05081.

A preliminary sketch showing the relationship of the Farallon Islands to the entrance to the Golden Gate.

Harbor of Refuge Charts showing Hart & City Island and Sachem's Head Harbor. Hart Island is presently the site of the largest cemetery in the United States.

A loose hand-written note stating "Soundings are referred to mean low water as a plane of reference & are expressed in feet ...." A statement of the vertical datum used for charting in the compilation of nautical charts at the time the note was written.

Chart of Mare Island Strait. This chart was actually the first work accomplished by the Coast Survey on the West Coast and was instrumental in establishing Mare Island as a naval base.

Sketch J, No. 4 for 1851 indicating proposed sites for a lighthouses on Point Pinos, Bay of Monterey. Outline of Monterey Bay by Lt. Henry A. Wise from a Navy survey conducted in 1847. The topography of Pt. Pinos was by Sub- Assistant A.M. Harrison.

Richmond's Island Harbor, harbor of refuge chart. The topography was conducted by Alexander W. Longfellow, a brother of Henry Wadsworth Longfellow. Alexander devoted most of his professional career to the Coast Survey.

A preliminary mockup of the nautical chart of San Diego Harbor and Point Loma.

Diagram of electrotype apparatus as devised by George Mathiot of the Coast Survey. This apparatus allowed the reproduction of copper-plate engravings each of which could only survive 500 to a 1000 or so press impressions before wearing away sufficiently to be useless. This system allowed the production of thousands of charts via plate copies produced from the original engraving.

Reconnaissance of the Western Coast from Monterey to the Columbia River. Sheet No. 1 of 3. This chart only extends north to Cape Mendocino.

View of the Entrance to San Francisco Bay showing Alcatraz Island and view of Cape Mendocino bearing North by compass at 12 miles.

Reconnaissance of the Western Coast from Monterey to the Columbia River. Sheet No. 2 of 3. This chart only extends from Cape Mendocino to north of the Umquah (Umpqua) River Entrance.

Views of Trinidad Head and Cape Mendocino. Oddly, the Cape Mendocino view is the same as on Sheet No. 1, looking from the south to north.

Reconnaissance of the Western Coast from Monterey to the Columbia River. Sheet No. 3 of 3. This chart extends from the Umquah (Umpqua) River to the Columbia River Entrance.

Hand sketch "Exhibiting the normal course and velocity of the tidal current at ebb for the 2nd Quarter (of the moon) in Charleston Harbor" by Lieut. J. N. Maffitt. Original mockup version.