O. Phelps Brown is not mentioned in the provided text, which lists individuals named Anson.
The provided text is an extract from a Wikipedia article detailing the given name and surname Anson, and listing numerous individuals who bear this name. It functions as a disambiguation page, cataloging people from various fields such as politics, sports, arts, business, and military service, spanning different nationalities and historical periods. The list includes figures like Anson Jones, the last President of the Republic of Texas, and Anson Green Phelps, an American entrepreneur. It also mentions historical figures involved in pioneering movements and territorial administration.
There is no information within this extract pertaining to an author named O. Phelps Brown. The text focuses solely on individuals with the name Anson, providing brief biographical details for each. Therefore, no specific contributions, works, or ideas can be attributed to an O. Phelps Brown based on this source.