Post nuclear accident short story.

[David Lee]

Short story probably in an anthology from the 60s or 70s. The main thing I remember about it is the end, so consider this a spoiler alert.
There had been a huge cataclysmic disaster. The only way for the population to recover with the general sanity intact was to make everyone forget about it.
One of the methods was to drop certain words from the language, including the term for baby bears. Maybe adult bears too now that I think about it.
Someone figured out what had happened and presented his conclusion at a meeting of scientists. His theory was rejected as implausible with the comment, "Who could take seriously the idea that a major city would be called "Chicago"?

 

[Richiehead]

It's by RA Lafferty but I can't remember the title.

 

[Danny McG]

It's in Nine hundred grandmother's by Lafferty

"What's the Name of That Town?


Edit/update:- found in here from 2007

Short story; punchline is "Chicago"

This story is from a book 30 or 40 years old. Set not too far in the future the plot dealt with a nuclear accident that was so devastating, everyone was made to forget it. A major city had been destroyed. Someone finally put the pieces together but when they presented their evidence the response...

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