“What did one wall say to the other wall?”/“Meet me at the corner.”

A riddle about walls is:
 
Q: What did one wall say to the other wall?
A: “Meet me at the corner.”
 
The joke was printed in the Brooklyn (NY) Eagle on August 17, 1940.
 
         
17 August 1940, Brooklyn (NY) Eagle, “Aunt Jean’s Column,” pg. 6, col. 7:
What did one side of the wall say to the other? Answer: Meet me at the corner!
 
29 July 1945, The Sunday Argus-Leader (Sioux Falls, SD), “Riddles,“pg. 19, col. 6:
“What did one wall say to the other wall>” asks Lela Meyer, one of the Appleton, Iowa, riddle fans. The answer is, according to Lela, “I’ll meet you at the corner.”
   
15 May 1955, The Sunday Press (Binghamton, NY), “Riddle Me This!,” Family Weekly Magazine, pg. 12, col. 3:
What did one wall say to the other wall?
I’ll meet you at the corner.
 
26 November 1966, Austin (TX) Statesman, “Fun Time—The Riddle Box” by A. Leokum, pg. 4, col. 5:
What did one wall say to the other?
Meet me at the corner.
 
Twitter 
greggfraley2
@greggfraley2
Want funny?  What did one wall say to the other wall?  Give up?  Meet me at the corner. Free book if U can tell me where that comes from.
8:54 AM - 29 Nov 2008
   
Google Books
Wise Crackers:
Riddles and Jokes about Numbers, Names, Letters, and Silly Words
By Michael Dahl
Mancato, MN: Picture Window Books
2011
Pg. 40:
What did the wall say to the other wall?
“Meet me at the corner.”
 
Twitter
silas beam
@SiLaS_TheVirus_
Q:what did the right wall say to the left wall?    A: I’ll meet you at the corner
1:01 PM - 25 Mar 2012
   
Twitter
AG
@AriannaGaither
What did the right wall say to the left wall?         
Meet me at the corner 😂😂😂😂
2:03 PM - 21 Nov 2013
 
Twitter
dad jokes
@dadtellsjokes
What did the left wall say to the right wall? Meet me in the corner
12:51 PM - 30 Apr 2018