BAUM, L. FRANK The Emerald City of Oz. Illustrations by John R. Neill, including 16 color plates printed with metallic green ink. 4to,

original light blue cloth with pictorial cover label, slightest wear to lower fore-corner of front cover, minor rubbing to front cover label; pictorial dust jacket, some creasing, a few skillful repairs on verso, minor restoration at edges. Chicago, (1910) FIRST EDITION, FIRST STATE. "Finding himself pressured to write an Oz book each year, Baum decided to conclude the series with this title --by making his fairyland invisible to all those who live outside its domain. Thus, no one, not even Baum, would be able to communicate with its inhabitants. As a[n intended] finale, this book was the most elaborately produced in the Oz series" -- Swann/Schiller 196. In fact, the series continued for many more books. Hanff & Greene VI.1.