Which book is this?

Diggers (1990) · Terry Pratchett Dazzling Diggers (1997) · Tony Mitton Digger Pig and the turnip (2000) · Caron Lee Cohen The diggers (1960) · Margaret Wise Brown Gold Diggers (2021) · Sanjena Sathian Good Girl or Gold-Digger? (2010) · Kate Hardy Digger and Daisy go to the zoo (2013) · Judy Young Diggers and Cranes (Young Machines) (1991) · Caroline Young Digger and Daisy go to the city (2015) · Judy Young Diggers And Cranes (2000) · Alvin Granowsky