was Ladybird's first series to look at people and the work
they do. The first 6 titles were issued with dust-wrappers.
Books in series 606b -
There were 20 titles published in this series between 1940
and 1980 inclusive. All entries below describe the first edition
of each title.
With the outbreak of war in 1939 paper was rationed. Part of W&H’s allocation was used for the production of servicing booklets and charts for suppliers of military vehicles.