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Arizona Eastern Railway

Hah! I love the OHM article’s intro:

Open Historical Map (OHM) is an effort to use the OSM infrastructure as a foundation for creating the world’s most universal, detailed, and out-of-date map.

(Emphasis mine.)

Elevations mass editing

And it seems that when someone tried to mass-edit elevations to remove “ m” suffixes last year, those edits were reverted with a link to the Automated Edits code of conduct.

See e.g. the history for the elevation example in that blog post, the Sickersberg.