Although not generally referred to as the "Russo-German War" but rather the "Eastern Front" or "Russian Front"/"Soviet Front"...or as the Soviets used to call WWII; "The Great Patriotic War" since they were only fighting the Germans (not Japan) that was World War II for them!
It should not be difficult at all to obtain maps/charts of the Russian Front from '41 to '45. That topic (Russian Front) is extremely popular, next to British involved fighting (Britain markets their participation in WWII above all else...especially on television's Military & History Channels).
Use the proper names/titles (Russian Front/Soviet Front/Eastern Front/and even use your Russo-German War if need by) and contact book stores such as Barnes/Noble or Borders they have a military history section, sometimes divided further by war. And of course the websites. Those stores also contain a magazine section which has a magazine dedicated solely to European WWII combat. Advertisements abound in those magazines offerign maps and charts of the Eastern Front.
There are really no maps and charts that prove that Columbus was Chinese. This has become quite a hurdle for most historians since no authentic maps or charts exist as proof of this.
The field of study that produces maps and charts of the Earth is called cartography.
Cartographic charts are those charts which are related to making of maps
This depends on the type of map. Cartography is the study of maps and charts. A person who studies topographical maps is called topographer.
A person who makes maps is a cartographer.The art of making maps and charts is cartography.
Charts
the making of maps and charts
Someone who creates maps or charts.
Cartography
One who makes charts or maps.
Atlas is a book of maps and/or charts
An atlas is a book of maps or charts.