Anons, I recall reading about secret Bolshevik/USSR cities that were identical to US cities and used to raise Manchurians but cannot seem to find a source now. Wierd. Any clues. For some reason I recall Allentown PA, Racine WA any Galveston TX. Any direction greatly appreciated! Found some articles how the Soviets mapped the whole world and had some places in perfect detail(Glaveston in one article).
https://www.citylab.com/life/2017/11/red-atlas-soviet-union-city-maps/546029/
Will have a look. Thanks. Any other articles sources greatly appreciated. TY anon.