It's a bit older than the 1962 copyright mentioned above. I have it in a 1939 Stamps-Baxter hymnal, "Favorite Songs and Hymns". There it's credited to Albert E. Brumley, Copyright, 1934, by The Hartford Music Co., in "Song-Path to Glory." The full title to the song is "I'd Rather be and Old-Time Christian (Than Anything I Know)"