“Where did the first corn come from?”/“The stalk brought it.”

The stork might bring babies, but what brings corn? There’s a Thanksgiving riddle:
 
Q: Where did the first corn come from?
A: The stalk brought it.
 
The riddle has been cited in print since at least 1941.
 
   
2 November 1941, The Sunday Argus-Leader (Sioux Falls, SD), pg. 6, col. 3:
Dear Granny: Where does all the corn come from?—Clem Bugbee, Walrus, Minn.
Answer: The stalk brought it.
 
30 November 1980, The Times-Picayune (New Orleans, LA), “Turning Over a New Leaf” by Mabel C. Simmons, sec. 3, pg. 10, col. 3:
Molly: Where did that baby ear of corn come from?
BIlly: The stalk brought it.
   
Google Books
August 1983, Boys’ Life, “Think & Grin,” pg. 65, col. 2:
Colonel Cobb: Where did the first corn come from?
Pop Corn: The stalk brought it. — Brian Ballone, Saddle Brook, N.J.
 
27 September 1989, Rockford (IL) Register-Star, “Mini-Chefs,” pg. 4D, col. 6:
Where did the baby ear of corn come from?
Answer: The stalk brought it.
 
Google Groups: alt.humor.puns
Puns of the Weak 11/29/02
Stan Kegel
11/29/02
(...)
Where did the first corn come from?
The stalk brought it (Jokes 4U)
 
Twitter
Richard D Parker 
‏@RichardDParker
Where did the first corn in America come from? (The stalk brought it!)
9:09 AM - 31 Aug 2009
 
Google Books
Rib-Tickling Riddles
Illustrated by Kevin Rechin
Columbus, OHL Highlights for CHildren, Inc.
2012
Pg. ?:
Where did the first corn come from?
The stalk brought it.
 
Twitter
Sues Views
‏@alwaysscruffy
Where did corn come from? The stalk brought it ☺ #pun #jokes #WackyWednesday #WednesdayJoke #RiddleMeThis #Riddle
1:58 PM - 26 Nov 2014