As the official Richard and Mimi Fariña website states, information on Richard Fariña is "scattered, sparse, tantalizing".

Richard Fariña

There is a photograph of Alex Campbell and Richard Fariña in Baby, Let Me Follow You Down: The Illustrated Story of the Cambridge Folk Years by Eric Von Schmidt and Jim Rooney

A reference to Campbell and Fariña can be found here under the year 1962

It's all very much a piece meal affair, trying to put together a picture of the period. I've a feeling it's the only way you're going to find out anything