Winnifred Greenwood 
Last updated: 22.06.17
All that can presently (December 2015) be gleaned about by internet searching is that Winnifred Greenwood is the one-off composer of In Mississippi (1904) published by Adelphi Pub. Co., Detroit, Michigan, USA.
Surfers are welcome to contribute information about this composer.

Further sheet music at DBE: ON HOLD