Saw this the other day - a 36' reefer for Hummel Brothers. Joe Piscitelli put together the special run and shared this with me:
"Hummel Bros provided me with their logo which I worked with to come up with the design that is on the car. We were not able to determine if they had reefer cars back in the 30s but the company was right near the New Haven RR terminal and still is actually. Hummel Bros is a real company - now in their 80th year."
If you're interested in one of these cars, he can be reached at sandpittrains (at) att (dot) net. He has them in 2 numbers; and in HO as well.
Nothing like "Reefer Madness"