The House Above the Trees

From Author Wars - https://authorwars.com/publications/the-house-above-the-trees-569737.html

Overview:

Title: The House Above the Trees
Author: Ethel Cook Eliot
Year: 2003
ISBN-10: 0961596163
Publisher: Raven Rocks Press
Pages: 143
Binding: Trade Paperback
Type: Novel
Title Reference: The House Above the Trees
Notes: (earliest US ed. in WorldCat as of 2016-05-08) LCCN: 2nd ed. // Beallsville, Ohio : Raven Rocks Press, c2003 Cover artist inferred from YouTube video showing cover (same illustration) and plates of the 1st ed., 1921

Amazon.com as of 2016-05-08 (no publ date or list price): "A wonderful fantasy written by Ethel Cook Eliot, first published in 1921. The illustrations include line drawings along with 5 color plates from Anne Anderson."