Two car pushers added to list

A recent thread on RyPN brought up the old car pushers from the Whiskey Island ore unloading facility in Cleveland and suggested that there were, indeed, still three of these diminutive 3'6" gauge electric locomotives in storage at the facility. Sure enough, a little online snooping revealed this page that confirmed the locomotives' existence and location. It even had the above photo, from a few years back, showing the cab of one locomotive peeking above the overgrowth.

Supposedly there are three of these locomotives, numbered 1, 2, and 4 (number 3 is currently preserved in Youngstown). I've added 1 and 2 to the PNAERC roster, as they're identical to number 3 and I have plenty of information on them (they're 1912-built Baldwin-Westinghouse locomotives built at the same time as the Whiskey Island facility). But that leaves number 4, which is something of a mystery. Anyone know who built it and when? I'd like to have some more information on it before adding it to the PNAERC roster.