Came across an old book of music entitled, The Andrews Sisters' Army, Navy and Marines (song folio).....chock full of wonderful tunes (many of which have been discussed here.) Has the song, "Nobody Knows The Trouble I've Seen" by E. Frances (copywright 1942)"and nobody knows but me" and that is how I've always remembered it. I also have a commumity song book entitled, America Sings, (copyright 1935) and it too has wonderful songs. Interesting, however, that the one song is called, "Nobody Knows The Trouble I've Had" and "nobody knows but Jesus".....it is not attributed to anyone and is listed as an American Negro Spiritual. I'm just sure this little song book is from the 60's and so revised, but now I'm good and confused as to which one is the "original" song!