Today's feature is another weird entry in railroad history, the Burlington Northern Boxhopper, or bopper! BN created these prototype cars in order to maximize the use of their rolling stock fleet. Normally, cars are sent out loaded, and returned empty. The aim of these was they could handle boxcar freight one way, and hopper goods on the way back (or vice versa). These cars had retractable floors that were hydraulically powered by a special power car. This way, they could convert between boxcar and hopper on the fly. Unfortunately these aluminum cars didn't work out, and most ended up scrapped. Three of the remaining cars and a power car were donated by the BNSF to the Lake Superior Railroad Museum in 2002.

More info:
https://www.youtube.com/watch?v=jlmyWyI9HT8

What you see here is one of three DD35 sample units that the espee ordered. Espee didn't order any others so I imagine these beasts were a rare sight in espee livery. These B-units (no control cab) came first, and the DD35A's were made later at UP's request. Like the A's none of these B units survived the scrapper's torch

The DDA35 is a cab unit version of the DD35, built exclusively for the Union Pacific railroad. Only fifteen of these beasts were built between May and July of 1965, numbered 70 (pictured) through 84. Powered by twin 567D prime movers, these locomotives were good for 5000 horsepower each. Unfortunately, these locomotives suffered reliability issues (seems to be a common theme), and by the time those issues were ironed out, the writing was on the wall. Their inflexibility and economic downturns of the 70's-80's lead to all units being retired and eventually scrapped.

I can't say for certain, as I'm terrible at identifying locomotives! But I'm pretty sure this is an MLW RS-10. Montreal Locomotive Works (MLW) was a subsidiary of the American Locomotive Company (Alco), and produced locomotives primarily for the Canadian market. MLW operated from 1883 to 1985, before being sold to Bombadier Transportation and dissolved.

The DT-6-6-2000 was Baldwin's offering for a diesel electric transfer switcher, initially powered by dual 606SC prime movers. This locomotive was mostly used by the EJ&E with them purchasing 27 of the 46 total built. These locomotives endured various rebuilds throughout their life with most being repowered with 567C prime movers. All but one have been scrapped with the remaining example preserved by the Illinois Railway Museum.