David Myrick's
Railroads of Nevada and Eastern California Vol.2 has a section with a photo or two about the Mohave & Milltown. If you don't have a copy, try your library.
From my research into the Los Angeles & Redondo, a 3' gauge steam line that converted to 42" gauge electric, I have some information about some sales to the Mohave & Milltown. I am traveling and away from my notes; but, I do recall that the M&M was sold some track switches, a combine car, and a locomotive. I believe that the combine car that shows up in a photo in Myrick is from the LA&R. I have an LA&R number for the locomotive; but no further ID. The problem is that LA&R had 6 locomotives of which only 4 have been identified and the line renumbered its locomotives and only some of the renumbering is known.
Brian Norden