"the interior decoration of the London house of the author of Winnie the Pooh had been described to them"
A copy of 'Winnie the Pooh'
Creative Commons AttributionA copy of 'Winnie the Pooh' - Credit: Chris Drumm, Flickr

 Winnie the Pooh, a much loved children's book about a honey-loving bear, was first published in 1926.

Its author, Alan Alexander Milne (generally known as A.A. Milne), lived during the 1920s/1930s  at 11 Mallord Street in Chelsea (now 13 Mallord Street) in southwest London.

Click here to see a photo of the exterior of A.A. Milne's former home as it is today.

 

It is not clear whether Muriel Spark is assuming some particular knowledge on the part of the reader at this point, or whether this is a deliberately enigmatic statement designed to add to Miss Brodie's undoubted mystique.