This is trivial to navigate. Use the notes API to post the likely presence of a public bookcase with details (link to image, description, etc); and the community will slowly ingest the contributions.

Or set up a maproulette challenge with much the same detail.

Or just a geojson dump under an ODBL licence and share with with relevant communities. The third one or something very like it is required if you have mixed ODBL with non ODBL content.