John Radford was not the most prominent of the O'Brienites - nor was he the most senior to make the journey to north-east Kansas where in the early 1870s they sought to establish a cooperative colony - but he was the foremost of those who chose to stay in Kansas and make his life there.
The photograph here shows Radford in Kansas City in 1903. The historian Gary Entz came across it courtesy of Radford's great-granddaughter, Debbie Osorio. It's published here with Gary's permission.
Some years back, I wrote jointly with Gary Entz an entry about John Radford for the Dictionary of Labour Biography - it's posted below.