They float, so they need the internal volume to displace the water. Compare to the Duplex drive Sherman with the folding canvas screens. The weight of US WWII combat vehicles was limited by the capaci

The Rock Island looks like the Minneapolis flour mills to me, maybe Pillsbury A Mill? -Hudson

Could the Fox trucks just be shop trucks? They were pretty much gone by 1946, and were not being used in new construction. -Hudson

Boxcars IHB 5689 and NP 29177

The NP Ry. records list these as ACF cars. -Hudson

On Shorpy: New York circa 1910. "Williamsburg Bridge and East River waterfront. Several loaded carfloats. https://www.shorpy.com/node/25590 -Hudson

NP Ballast Car 85020

NP Covered Hopper 75513

Using a lightbox may be the way to see the decals better, if all else fails Tupperware and a Flashlight. -Hudson

OK here it is with the correct caption Still 3 doors no waiting. -Hudson

Disregard the caption, I put in the information for 1st 91725, and it should have been 2nd 91725. -Hudson

NP Reefer 91725 Three doors no waiting. -Hudson

NP Reefer 91497

NPMX 504 Mech Reefer

A little off topic, but what Groups are people following on Groups.io, I am wondering if there are some good ones I am missing. My list is: RealSTMFC MFCL PassengerCarList Ry-ops-industrialSIG bbfcl R

This is also how the RRs ship prefabbed switches. -Hudson

Just a idea, a lot of knife makers use toaster ovens with a aftermarket precision thermostatic controller. https://www.ebay.com/itm/Inkbird-Digital-Temperature-Controller-110V-2-Relays-Thermostat-50-2

It's a poor copy but you will get the idea.

A little OT, Lidgerwood is still in business, they make car pullers and ship winches. -Hudson

https://www.shorpy.com/node/25537