(Found) Man's observation of Galactic Society becomes comedy hit.

[TomMazanec]

Novelette length (?). 50s or 60s probably. English.
The protagonist is the first human to be given a tour of the hyper-advanced Galactic Civilization. He writes a factual book about his experiences.
It becomes a smash comedy hit throughout the Galaxy, and Earth's sole supply of alien money.
The reviews cite excerpts like "My tour guide wore a blue cloak." as being uproariously funny.
The protagonist does not understand why his book is getting this reaction until he remembered a story he had heard about a primitive tribesman from New Guinea or the Amazon encountering Westerners for the first time and telling his fellow tribesmen things like "The Witch Doctor wore a round mirror on his forehead to scare away the Disease Demons".

 

[Danny McG]

Argh!
I read this myself but I can't think of the title (yet)

I'm getting a Damon Knight vibe

 

[Droflet]

Or Douglas Adams?

 

[Guttersnipe]

Or Douglas Adams?

Sounds like it, but according to ISFDB, the short fiction he wrote was in the 80s, and the OP says it's from the 50s or 60s. I guess it depends on how certain they feel about that detail.

 

[otistdog]

Probably "A World by the Tale" (1963) by Randall Garrett. It can be read online via Project Gutenberg.

 

[Danny McG]

Probably "A World by the Tale" (1963) by Randall Garrett. It can be read online via Project Gutenberg.

Yeah! That's the one I was trying to remember.... I've wasted a couple of hours going through loads of Damon Knight tales!

(Well not wasted really, I thoroughly enjoyed reading them)

 

[TomMazanec]

That was it.
"A World by the Tale" is it.
Found.