All that can presently (August 2015) be gleaned about by internet searching is that Benjamin Allen Purrington is the one-off composer of When It's Over, Over There Molly Darlin'
(1919) published by Daniels and Wilson Inc.
, San Francisco, California, USA which he co-authored with Charles Neil Daniels
as Neil Moret..
Surfers are welcome to contribute information about this composer.