One image of an octagonal house called Mountain View in Ameliasburgh, Ontario. The image is not in the books, but the property is listed and described in the books.

Two images of octagonal houses. One image is of a house from Ameliasburg, Ontario, built by Owen Roblin ca. 1860. The other image is of a house from Bracebridge, Ontario, built for Henry James Bird ca. 1882. Both images are in the books.