Apparently there is a lost thread on Brumley Songbooks. A couple of the old messages seem to have been transferred here.
In a thread (that I've lost), the date 1942 was ascribed to Brumley's "I'll Fly Away." In a songbook I have is the note "Copyright 1932 in Wonderful Message Hartford Music Co., Owner." Brumley is credited with both music and lyrics. The DT does not credit Brumley in its copy of the lyrics.
Perhaps the DT has an error in the 2nd verse. In the sheet music in the book I have, the first line is "When the shadows of this life have grown," but the DT has "have gone." "Grown" rhymes with "flown" in the next line, but gone makes more sense. The copy I have could be wrong, since the 2nd line of the first verse reads "To a home on God's celestial snore."

The little book is "Songs That Tell A Story," Book No. 2, Arlen and Jackie Vaden, The Southern Gospel Singers, no date but 1940s, Trumann, Arkansas. They advertise "A complete stock of gospel songs on record, order from The Record Shop, Trumann, Ark., records $0.89 each, when ordering tell title of song and the artist." Them wuz the days! The