The Red Splashed White (rs) - full journal article (Quinn, 1934) is available online at the following link (1.2 MB):

A Colour Mutation in the Rhode Island Red Fowl
http://www.ias.ac.in/jarch/jgenet/29/75.pdf

* There are some B/W photos.

*Note, Quinn named the mutation p (as seen in the paper), but Hutt later changed the name to rs