The adventures of Humbert, Simp & Harquin /
Burningham, John.
Burningham, John.Humbert, Mister Firkin & the Lord Mayor of London.
Burningham, John.Cannonball Simp.
Burningham, John.Harquin.
London Cape
1976
Contents: Humbert, Mister Firkin & the Lord Mayor of London. Originally published : 1965 - Cannonball Simp. Originally published : 1966 - Harquin. Originally published 1967