In 1911, Roger Quilter set the children's story Where the Rainbow Ends to music. This work became a classic of childrens' fairy plays, performed annually from 1911 until 1959, and touring during the second World War. Until now, the libretto has not received much attention, but recently, Valerie Langfield came into possession of papers forming part of the estate of Clifford Mills, the pen-name of Mrs Emlie Mills Clifford. These include manuscripts for Where the Rainbow Ends, as well as for her other plays.