OpenHistoricalMap

Thanks as always for all the detail you’re adding! From the osm_id tags you’re adding, it looks like you’re copying features from OpenStreetMap and adding dates to them. If you didn’t author these features in OSM to begin with, please make sure to also add license=ODbL to each way in order to acknowledge OSM’s license.

OHM prefers public domain content where possible, and most mappers go through the trouble of remapping things from scratch just to accomplish that. But if you prefer to start with OSM data, properly attributing OSM will keep us on good terms with that project. Thank you for understanding.