Neat little trailer. Not seen one of those before. A quick search yielded the page you got your info from:
https://usautoindustryworldwartwo.co...odycompany.htm
And these two threads on well-known forums:
https://forums.g503.com/viewtopic.ph...77565&start=15
https://hmvf.co.uk/topic/32350-what-kind-of-trailer/
It "appears to be some sort of communications trailer"
