Is this a Mombassa RRT?

[cruiseroutfit]

Hmmm, I think you need to go many levels deeper and farther back than the 40's/50's to find the "first" one, here is an example :sombrero:

Touche

However my 40/50's comment was referring to the style of tent that we are still seeing today. As I recall it originated somewhere in that time frame.