Dating geographia maps
Make a list of the systems likely to be of influence. Plot Street Neighborhood Town or City Landscape Township County Watershed Nation Continent Hemisphere Global Return to Top of Page Now that you have some idea of what you are looking for, you need some advice on what kinds of maps are available.
These images provide a real bird’s eye view, and they were used for land surveys after World War I.Your question should be narrowed to a specific period.However, some of the systems involved in your question may operate at longer time scales.Be clear in you research question before beginning to look for map evidence.What are you trying to discover about the environmental history of your topic?Some examples are: Building layout/urban form Transportation Land forms/topography Food Climate Politics Race Economy Population Human Health Industry Energy Water Now consider your list of important systems. Bird's-Eye View of Madison, 1908, Image ID: WHi-3160, Wisconsin Historical Society Bird’s-eye views are artists’ renditions of panoramic views of cities drawn from above.
In these images, accuracy in details such as street names and locations of important buildings were combined with creative embellishments that can communicate an extraordinarily rich account of the landscape at the time when the map was created.
Plat maps are based on the Public Land Survey System (PLSS) gridlines that were established as a result of the Northwest Ordinance of 1787.
The first surveys were completed in 1820 after the establishment of the US General Office in 1812.
(click for larger version) Interior Field Notes (Dec.
1834) Lyon, Orson INT082E06, Section Line, Township 7 North, Range 9 East, Between Sections 25 and 26 (North), Wisconsin Board of Commissioners of Public Lands, and the University of Wisconsin Board of Regents.
Orthophotographs are maps made from aerial photos with corrections made for the angle of the camera with respect to the landscape.