Elmhurst is the palatial estate once in the possession of Jane Merrick, later passing into the hands of Kenneth Forbes.
The mansion is equipped with the standard features, including a great dining room, ample servants' quarters, stables full of horses, and lush flower gardens centered on a piazza at its rear. (Aunt Jane's Nieces)
The great house is surrounded by 1200 acres of fertile farmland, much of which is rented out to local cultivators. (Aunt Jane's Nieces at Work)
Elmhurst may be an exaggerated and imaginatively enlarged version of Rose Lawn, the Baum family home in Chittenango, New York where the author grew up. The house was named after the hundreds of rose bushes on its grounds. Baum had previously used the real Rose Lawn as the model for Roselawn, the house in Dot and Tot of Merryland.