Hi,
I followed this thread with interest, watching as it seemed to split into a discussion about at least 2 separate songs (the scan of the lyrics don't match).

From this webpage:
http://parlorsongs.com/issues/2003-11/thismonth/featureb.php

comes the origin of the song my mother sang to me in South Wales (Britain) in the early 1960s...

The webpage includes a link to the lyrics, the sheet music and the midi file, as well as an image of the original sheet music cover and some notes regarding the song's origins, among them...

"Wyoming Lullaby( Go To Sleep My Baby)
1920

Music by: Gene Williams
Lyrics by: Williams

The song began it's life as an instrumental waltz titled Wyoming. Soon after its introduction, the composer published it as a song. The song was mildly popular but enjoyed its greatest popularity when resurrected by Bing Crosby in the 1940's. The music and song have survived as a standard to today, more though as a lullaby than a song about Wyoming. First recorded in 1920 by Charles Hart & Elliott Shaw on the Brunswick label, then again in 1921 by Nora Bayes on Columbia, the song lay fallow till 1946. Judging from the cover statement "The Sensational European Success," it seems that early on, the song may have had more success in Europe than America."


I hope this info will help to clear up at least some of this matter for some people.