[JeemBeau]

It was Chicago Mayor Richard M. Daley (the son of Richard J. Daley) who had X’s chiseled into the airfield, without a Notice To Airmen, and without notifying the owners of airplane who were based there.

[fireman15]

Richard J. Daley) who had X's chiseled into the airfield

Actually, the X's were bulldozed into the runway making it unusable. This has a different connotation than “chiseled”.

https://chicago.suntimes.com/2023/3/31/23662485/miegs-field-airport-mayor-richard-daley-bulldozed-notherly-island-plane-march-2003

Although I assume that the aircraft still based there were able to takeoff using the taxiway.