There was an Orion Thomas Mason (1865-1943) who I think could be a candidate to have been the O.T. Mason listed in connection to Ray'snote. Orion Thomas Mason lived all his life in Medway, Massachusetts. He was a politician and civic leader. He was the town historian and a marketgardener with the firm of Hodges & Mason. He wrote the book "Handbook of Medway History 1713-1913."

In the Springfield Republican Wednesday, December 26, 1934 there is an article (reprinted from the Lowell Courier-Citizen) entitled"Commodity Currency" which states:

I have attached this article and another (Boston Herald, June 25, 1932) as well as a photograph and brief bio which I found attached to athread on a stamp collecting forum. The poster there said that it is from "Who's Who in Massachusetts Politics" from 1915.

To read the complete article, see:
US Army Postal Service(https://www.stampcommunity.org/topic.asp?TOPIC_ID=16199)

Ray also contacted David Sklow, Director of the Dwight N. Manley Numismatic Library at the American Numismatic Association, who writes:

To read the earlier E-Sylum article, see:
OTIS TUFTON MASON (1838-1908)(http://www.coinbooks.org/v21/esylum_v21n46a12.html)