Online Historical Map Georeferencer (OHMG)

OHMG is a web application that facilitates public participation in the process of georeferencing and mosaicking historical maps. Currently, a single implementation of this software exists, at OldInsuranceMaps.net, a platform based around the Sanborn Map Collection at the Library of Congress (loc.gov/collections/sanborn-maps). More generic deployments are in the works.

• Home page: ohmg.dev
• Implementation: oldinsurancemaps.net
• Documentation: about.oldinsurancemaps.net

Please don't hesitate to open a ticket if you have trouble with the site, find a bug, or have suggestions otherwise.

Documentation

See: docs.oldinsurancemaps.net