When I first noticed different styles of power, I was maybe 5 ot 6, I could pick out what was coming just by the sound of the exhaust. I didn't know a GP7 from a HH-6-24, as far as what they were called, but I knew CNJ's Geep, Trainmaster, Baby Trainmaster, and PRR E-units, a couple of PA1s that lasted there, and Sharknoses. CNJ units all had low-pitched one-note horns, the Pennsy power had five-chimes.
Earle, you are right about the power of the TMs, towing 16 cars with ease. As time went on, I often wondered why NJT would haul three-car Bay Head locals with GP40s and F40s, so much power wasted.
Thanks to Fairbanks-Morse power, I discovered bi-directional operations. One day the cab is toward the front, next time to the rear. I was all of kindergarten age at the time! Even my father didn't know these things, I was so proud of myself.
They tell me to act my age. I don't know how to do that. I've never been this old before.