Note, the geodata may not always be accurate.
https://twitter.com/vpkivimaki/status/9 ... 9718595584
The set spans from 1917/18 to 91, so applying a filter (e.g 1922-1940) to adjust it for the interwar and postwar period and to avoid possible duplicates is advised.
https://fusiontables.google.com/data?do ... I#map:id=4
Of particular interest is the comparison of the information provided for the Wehrwirtschafts- und Rüstungsamt (Sept. 1940 status)
http://wwii.germandocsinrussia.org/de/n ... ect/zoom/8
and the backup facilities with respect to the share of the Eastern USSR in defence industry enterprises.
https://www.cambridge.org/core/books/pa ... F2CB5A413E