Mick Vedmore of Old Waterways Books kindly wrote to me to point out that in addition to "Painted Box", Malcolm Saville did write two more
children's books that he set on canals..He wrote 'Two Fair Plaits' in 1948 set in the Regents Canal and finally in 1956 'Young
Johnnie Bimbo' set on the Grand Union Canal.
I will have to look out for them.