Found this, from post 3, here:
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www.rypn.org]
That last 4 wheel diesel torque converter unit for Marble Cliff Quarries was c/n 76150, not 76151. There never was an officially assigned c/n of 76151. It has been "assigned" by historians to the BLW plant switcher at Eddystone in later years, a 45/50 ton B-B diesel electric built in early 1956 to a Whitcomb design. BLW assigned a c/n to a loco when it was sold, not built, so that one never officially received one.Dave Hamley