Frigidaire A/C $30.00

[goatfarmer]

Made only by General Motors. 

https://southbend.craigslist.org/app/d/frigidaire-air-conditioner/6698958876.html

 

[gyrafoam]

Oh, I remember these.
As far as "window-shakers" go these were really powerful. I knew someone in Atlanta who cooled a whole three bedroom house with one of these.