'Lost in the Library: A Story of Patience and Fortitude', by Josh Funk.
This is a delightful story (in rhyme) of friendship and the delights of reading that will make you want to go and visit the famous New York City Library at your first opportunity.
I really can't say enough in recommendation. It blew my mind. Some children's authors are geniuses.
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Having looked them up, the 'McDuff' books are by Rosemary Wells - anything by Rosemary Wells comes highly recommended.
For humour, try 'Morris's Disappearing Bag' - a warm Christmas tale.
Also recommended, the 'Yoko' books by Rosemary Wells.
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Books by Jan Brett - beautifully illustrated, often with Nordic or Christmas/snowy settings.
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'Waiting', by Kevin Henkes. Many others by the same author.
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The 'Hat' trilogy, by Jon Klassen.
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'Extra Yarn', by Mac Barnett, (illustrated by Jon Klassen).
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'The Wolf, the Duck and the Mouse', by Mac Barnett.
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'The House Held up by Trees', by Ted Kooser.
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'This Moose Belongs to Me', by Oliver Jeffers (any book by Oliver Jeffers really, but this one is especially wonderful.
Also 'The Great Paper Caper', same author.
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'Building our House', by Jonathan Bean.
Also 'At Night', same author.