In answering your questions, the figures were made at a scale of 1:10000 and the issue presented is an excerpt from an analysis that used a larger number of materials. Due to the large distortion of the maps, age and coordinate systems, most of which were impossible to determine, the calibration of the maps was done on the basis of fixed points in the study area, which were also shown on the maps, belonging to the development or communication network, such as the network of railroad routes. Historical maps on the Geoportal of Lower Silesia are intended for display, but it is not possible to download them. The maps used in the analysis were those obtained from various institutions, e.g. Digital Library of University of Wroclaw, State Archives of Wroclaw, and online services.
In answering your questions, the figures were made at a scale of 1:10000 and the issue presented is an excerpt from an analysis that used a larger number of materials. Due to the large distortion of the maps, age and coordinate systems, most of which were impossible to determine, the calibration of the maps was done on the basis of fixed points in the study area, which were also shown on the maps, belonging to the development or communication network, such as the network of railroad routes. Historical maps on the Geoportal of Lower Silesia are intended for display, but it is not possible to download them. The maps used in the analysis were those obtained from various institutions, e.g. Digital Library of University of Wroclaw, State Archives of Wroclaw, and online services.
What scale are the historical maps shown? What historical map calibration method was used? Was the Geoportal of Lower Silesia, where historical maps are presented, used?
https://geoportal.dolnyslask.pl/imap/?gpmap=gp62#gpmap=gp62