[wcedmisten]

Have you heard of:

https://www.openhistoricalmap.org

I don't think you can pay for it, but I'm sure they'd accept donations!

[petre]

Interesting but not entirely accurate. Moldova has not existed as a state until 1991, after the dissolution of the USSR but it shows up on the map after WW2.

[pininja]

The great thing about open map projects is that they can be updated, and store a historical edit log along with discussions and sources for each change.

[uneekname]

As with other community projects such as Wikipedia or OSM, OpenHistoricalMap relies on keen-eyed volunteers such as yourself to improve their database!

[mholt]

Ah, wonderful -- thank you