The coverage field is used to track temporal and geographical location. We are already tracking countries in tags and street addresses in geolocation, leaving cities, counties, states and other regions to be recorded in coverage.
New York, NY, United States
New Jersey, United States
We are using the names of cities and countries as they were rendered at the time, it makes it simpler for transcribers and metadata entry staff.
Moscow, Soviet Union
Stalingrad, Soviet Union