The Argus, Melbourne, Thursday 13the December 1877, page 8.

An advertisement appeared in the Argus for “McNeill’s Art-Union”. Signatures of the Committee of Drawing include a “Mr. J. Ross” from “Ferguson & Urie”.

I don’t have any recorded information about an employee named J. Ross who may have worked for the company. His photo doesn’t appear anywhere in the 1887 employee dinner poster so the assumption is that he has left the company sometime between 1877-1887.