Origin of "American Dream"?

Totally stumped on this one. Any help appreciated. Where the hell did that phrase originate? Much obliged.

I didn’t find the source of the expression. However, William Safire, in his Political Dictonary, quotes the following:

P.S.: Welcome aboard!

According to this essay “The earliest usage of the phrase occurs only in 1931 in an article written by James Truslow Adams, the ‘Historian of the American Dream’, for Catholic World”

He cites the following source for this information…
Morey-Gaines, Ann-Janine: “Apples and Ashes”; Los Angeles: Scholars Press, 1982, p.2

thnx so much for info! you guys are great… quite impressed with how quickly you found the answer also… thnx again…