Here is a nice first edition copy of one of the scarcer Oz books, “Hidden Valley of Oz”, by author Rachel Cosgrove. Copyright 1951 by Reilly & Lee, this meets all the first edition points in Bilbiographia Oziana (32 pg gatherings, pictorial endpapers, color pastedown). Illustrations in B&W by Dirk (this book was published later and never had color plates).
The book is in very good overall condition. Color pastedown looks great; spine and rear cover are clean and straight. Inside, there is a “please return to the library of xx and xx written on the front endpaper”, and a small break to the paper over the front endpaper which could be easily reglued. Hinges in nice shape, rear endpaper with light soiling, binding solid, pages clean without marks, tears or odor. A quite nice copy overall.