Small World Indeed!

Year: 1950s, 
Artist: Paolo Garretto
 
Paolo Garretto was a prominent graphic designer in the 20s-30s. This art is at the Pan Am Archives at the U of Miami and reported to be an ad sketch by Garretto, but it's unclear if it was every produced, either as an ad or poster.
 
Please contact info@panamposters.com if you can confirm the authenticity of this poster.