On Sun, 3 Nov 2019 22:11:22 +1100, Frank wrote:

I am hoping to find the time to do a little more exploring of
Adelaide newspapers to find out more about this locomotive and its
owners.

There is an intriguing entry on a SA State Library web page, regarding
the 'Adelaide to Unley and Mitcham Tramway'.

"while a meeting called to consider the use of steam motors is
reported on
30 September 1879, page 5a; also see
29 November 1879 (supp.), page 2b."

The journal concerned is "The Register", which unfortunately is not
available through Trove.

See <http://www.slsa.ha.sa.gov.au/manning/pn/m/mitcham.htm>

I have found the Baldwin specification sheet for the locomotive, and
against "Color" it says "Canary", but there is a question mark after it!

The horse tram rolling stock liveries in Adelaide often incorporated a
bright yellow colour, so this would be consistent. See....
<https://www.flickriver.com/photos/intervene/4208462170/>

And thank you Richard for the two photographs.

Yes, very interesting!

Bill Bolton
Sydney, Australia