Dates Detroit "Bullseye" cab lubricators came into use - Model Railroader Magazine - Model Railroading, Model Trains, Reviews, Track Plans, and Forums
Automatic lubricator - Wikipedia
How does a hydrostatic lubricator work in a steam locomotive? - Trains
Engine Lubricators Archives - PRESTON SERVICES
Hydrostatic Lubricator - Hobby Mechanics
How a hydrostatic lubricator works - YouTube
Hydrostatic lubricator
Hydrostatic Lubricator for Locomotives, circa 1920 - The Henry Ford
Harrison Lubricator, Patent Model | National Museum of American History
Steam Locomotive Engineers & Firemen | The glasses on the hydrostatic lubricator sometimes become “Cloudy” and as such are hard to tell if the drips were going at the proper rate