Title: Pontchartrain Lake, La. Letter from the Acting Secretary of War, transmitting, with a letter from the Chief of Engineers, report of preliminary examination and survey of Lake Pontchartrain, La., with view to removal of the middle ground between the Rigolets and north draw of New Orleans & Northeastern Railroad Bridge
Subjects: Maps, Topographical surveying
Places: Lake (La.) Pontchartrain, Pontchartrain, Lake (La.)