By The National Map Corps
March 5, 2020
This challenge is now FINISHED!! Thank you to everyone who contributed!
FINISHED!! TNMCorps Mapping Challenge for City / Town Hall Structures in MT, ND, & SD
We're putting together summary results and will post them on this page shortly. We're also working on a new challenge that will soon be posted on this page. In the mean time, our challenges for Arkansas schools and Arkansas city / town halls are still open!
Sources/Usage: Public Domain.