Milly-Molly-Mandy Goes Blackberrying

From Milly-Molly-Mandy Stories (1928)

SUMMARY: Milly-Molly-Mandy and little-friend-Susan's plans for blackberrying are thwarted by a 'TRESPASSERS WILL BE PROSECUTED' sign, but they make friends with a rabbit instead.

This story ends with the exclamation

(And that's a true story!)

which fortunately does not recur for some time.