Luther wasn't founded until the railroad came through in 1898, but with that advantage it quickly outgrew Douglas, Garnettville, and Garden. These three earlier communities and their Post Offices were among those "discontinued to Luther". The Douglas Post Office in Garfield County was established after the one in Oklahoma County was closed.

With incomplete information, you might experience the frustration of looking for a Garden family in the wrong township and wrong county on the 1900 census. Or if you didn't know that there were two Douglas Post Offices over 50 miles apart you might be searching the wrong part of the state, a classic wild goose chase. But whether you are searching the census and land records, or trying to find what would have been the local school, church, or cemetery, knowledge of the history and geography of an area will lead you in the right direction.

This index was compiled from a variety of sources in an attempt to make it as comprehensive as possible.  In some cases, an order authorizing the establishment of a Post Office was rescinded so quickly that it may never have gone into operation but even these are included in this index.  When an office was near a county line, Post Office records sometimes show it in one county while GNIS shows it in the adjoining one so both have been included.