Love the idea of a hallway library - in a small house you need all the space you can get, and it is not always feasible to dedicate an entire room to books. Also, with the entire wall lined with built-in bookcases it makes hidden doors more hidden.
French Normandy Style Home!
A Small Country Cape Updated by Smith & Vansant in Vermont
LOFT SPACE AS AN ART STUDIO; Loft and library combined: Rustic and industrial make a happy marriage in designer Jill Sharp Brinson's Atlanta house. Her 1936 cottage's old barn beams to define the loft and steel shelves for books. From House Beautiful