När trollmar skötte kungens storbyk

From Author Wars - https://authorwars.com/books/nar-trollmar-skotte-kungens-storbyk-2510280.html

Overview:

Title: När trollmar skötte kungens storbyk
Author: Elsa Beskow
Year: 1914
Type: Short Fiction

Variant Titles:

1974. When Mother Troll Took in the King's Washing