Should be accessible via Jstor: http://www.jstor.org/action/showPublica ... petologicaNeill, W.T. 1949.
Herpetologica 5 (2nd. suppl.): 1-12. [Elaphe obsoleta rossalleni]
This subspecies is always a popular topic of debate. Debate is pointless without the original description. I see people arguing over characteristics that have become part of the hobbyist definition for this subspecies, rather than the actual original published description.
Thanks in advance!