Written and first recorded by Rodney Crowell (1978).
Hit version by The Dirt Band (US #13/C&W #58/CAN #3/AUS #35 1980).
From the wiki: “‘An American Dream’ is a song written by Rodney Crowell. He recorded it under the title ‘Voilá, An American Dream’ on his 1978 album Ain’t Living Long Like This with a backing vocal by Emmylou Harris, and released it as the B-side to that album’s single ‘(Now and Then There’s) A Fool Such as I’.
“‘An American Dream’ was later recorded by The Dirt Band (née Nitty Gritty Dirt Band). It was released in November 1979 as the only single and title track from the album An American Dream. The Dirt Band’s version features a backing vocal from Linda Ronstadt. The single charted Top-20 on the Billboard Hot 100, marking the group’s last appearance at that level on the Billboard chart.”
The Dirt Band, “An American Dream” (1980):