Coast Survey Map of the City of Petersburg after the Keily Map of 1854

NOAA 596-00-1861 detail. This Petersburg map is an inset on a larger page that also shows a rough survey of the Namozine River and vicinity, titled "Map Showing Several Counties in Virginia." This map appears to be another copy of the "James Keily Map, 1854" shown below.

NARA G 164 Flat. This is a photographic copy (1864) from the files of the Engineer Department of a map drawn by James Keily and published by J. D. Scott in 1854.

The War of the Rebellion: a compilation of the official ... ser.1:v.40:pt.1:Reports. p292...On learning the plan adopted I directed my principal assistant, Maj. John E. Weyss, to commence on the 9th an exact triangulation of the front of Petersburg, locating our own line of work as well as that of the enemy, and to take the immediate charge of the surveying party. My assistants, Messrs. Theilkuhl, Schumann, and Jacobsen aided him. The work was extended from the south of the Jerusalem plank road as far north as City Point. By this triangulation, performed under the fire of the enemy’s batteries and sharpshooters, the different spires and certain prominent buildings in Petersburg were accurately located, and having been kindly furnished by Professor Bache, Superintendent of the United States Coast Survey, with a copy of the beautiful map of that city and the Appomattox River prepared a few years ago in his department, I was able to combine the two [emphasis added], and thereby obtain an exact and connected map of the locality of our siege operations, covering the whole ground occupied by both armies....
N. MICHLER,
Major of Engineers, U. S. Army.