Here's the oldest text I can find with Google Book Search. Note that this is much older than the song for which Dwight Latham and Moe Jaffe claimed copyright. However, their claim may have some merit if they wrote a new tune to go with the words.

The Hawkeye, Vol. 24 (Iowa City, Iowa: State University of Iowa, 1915), page 382:


CURRIER HALL MENU

On Monday we have bread and gravy,
On Tuesday have gravy and bread,
On Wednesday and Thursday have gravy and toast,
But the toast is the same as the bread.
On Friday we have the same menu,
And on Saturday again we are fed,
But when Sunday comes, by way of change,
We have gravy without any bread.