Thanks for the replies,

The melody to Back Up/Rubber Dolly is the 2nd strain, the opening strain has nothing to do with either.

12 Stringer you mentioned the B part. There is a third part that has the similar chords at the beginning of it. This might have been adapted as the 2nd part of Back up and Push.

The lyrics are found on the last page to the second strain (although it has modulated to the key of C (1st time it's in the key of G).

It seems likely that Rubber Dolly/Back Up and MJH's "My Creole Belle" all originated from the same melody by Lampe.

After all, this was entering the popular time for ragtime. The Maple Leaf Rag sold, if I remember correctly, over 5 million copies during the early 1900's. It would be interesting to find out the popularity of Creole Belles.

Richie