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- Description:
- One navigational chart entitled "St. Lawrence River, Detail Sheet No. 7." The title block near the lower right corner of the sheet indicates "Major C. B. Comstock, Corps of Engineers, U.S.A., in charge" and that the chart area was "Surveyed by F. M. Towar, A. T. Morrow, and C. Stephens." The chart was drawn at a scale of 1:10,000 and is printed in black ink on white paper. Survey information includes water depths in feet, depth contour lines, shoal and current notes, river bottom characteristics, shoreline details, towns, roads, property lines, north arrow, and survey triangulation points. The chart is dated 1871. A black ink stamp on the verso shows "U. S. Engineer Office, Detroit, Mich., Jun. 20, 1901."
- Date Issued:
- 1901-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Description:
- One navigational chart entitled, "Chart of Detroit River" that was compiled and published as part of the Survey of the Northern and Northwestern Lakes (War Department, Corps of Engineers). It was "Projected from a Trigonometrical Survey executed under the orders of Major C. B. Comstock, Corps of Engineers." The chart is drawn at a scale of 1:40,000 and shows the Detroit River from Wind Mill Point at the lower end of Lake St. Clair down to Pointe Mouillée at the lower end of the river. Land areas are shaded in pale yellow. River/lake areas are shown in white and pale green. Distances are given in statute miles. Soundings for lake depths are given in feet. Lines of latitude and longitude are shown in black. Lighthouses and buoys are also noted. An inset chart on the lower right side provides additional details of the ship channel in the vicinity of Amherstberg and the mouth of the Detroit River.
- Date Issued:
- 1906-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Description:
- One navigational chart entitled, "General Chart of the Northern and Northwestern Lakes, Including New York State Canals and Lake Champlain," that was compiled and published by the U.S. Lake Survey, War Department, Corps of Engineers. The chart (No. 0) is a polyconic projection and is drawn at a scale of 1:1,200,000. It shows all of the Great Lakes region from Duluth, Minnesota, to Lake Champlain and the Hudson River in New York. General topographic details and notes are printed in black. Land areas are shaded pale yellow. Lake areas are shaded white or light blue depending upon water depth and also include contour lines for water depths in fathoms. Lines of latitude and longitude are shown in black. Lines of magnetic variation are shown in red. Principal lighthouses are shown in red and yellow. Information tables are shown on the right and left sides of the chart for U. S. and Canadian canals, dry dock locations, and annual lake level fluctuations. Printed text near the center lower edge shows "Aids to Navigation Corrected from Information Received to June 20, 1916."
- Date Issued:
- 1916-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
- Description:
- One navigational chart entitled "St. Lawrence River, Detail Sheet No. 6, From Galop Rapids to Point Iroquois." The title block near the top of the sheet indicates "Major C. B. Comstock, Corps of Engineers, U.S.A., in charge" and that the chart area was "Surveyed under the direction of Lieut. W. R. Livermore, Corps of Engineers, U.S.A." The chart was drawn at a scale of 1:10,000 and is printed in black ink on white paper. Survey information includes water depths in feet, depth contour lines, shoal and current notes, river bottom characteristics, shoreline details, towns, roads, property lines, north arrow, and survey triangulation points. The chart is dated 1871.
- Date Issued:
- 1901-01-01T00:00:00Z
- Data Provider:
- Detroit Historical Society
