Goober Burger or Goober Hamburger (hamburger with peanut butter)

Entry in progress—B.P.
   
1 September 1963, Trenton (NJ) Sunday Times-Advertiser,  “Forward In Homemaking” by Mrs. Margaret M. Lawson, Mercer County Home Agent, pt. 3, pg. 4, col. 2:
GOOBER ‘BURGERS are a meal in themselves. Spread peanut butter on hot-off-the-griddle hamburgers and insert into toasted hamburger buns along with fresh tomato slices and lettuce leaves.
 
13 August 1964, The Times-Picayune (New Orleans, LA), sec. 5, pg. 2, col. 2:
Goober Hamburgers
Add a little peanut butter to seasoned ground beef; shape, cook and top with cheese.
 
7 March 1968, Dallas (TX) Morning News, pg. 2E, col. 1:
Goober Burgers
Goober Burgers are sure to hit the spot. Spread peanut butter on top of sizzling, hot-off-the-griddle hamburgers and pop them into toasted buns, along with fresh tomato slices and lettuce leaves.
 
Bill Streeter
The End of the Goober Burger
Posted by Bill Streeter on Aug. 23, 2007
It’s sort of funny how you come across news. I happend on this photo while browsing my friends photos on Flickr and when I looked at it I learned that this old restaurant The Wheel Inn Drive Inn is closing soon. I know the Wheel Inn because when I was in the Air Force I was stationed near Sedalia Missouri where it sits prominately on the corner of a big intersection there. I had no idea that the place had been open so long–60 years. Their gimmic was the “Goober Burger” a hamburger served with peanut butter on it.