PRYOR, WILLIAM CLAYTON.
The dirigible book; a photographic picture book with a story, by William Clayton Pryor & Helen Sloman Pryor.
PRYOR, WILLIAM CLAYTON. The dirigible book; a photographic picture book with a story, by William Clayton Pryor & Helen Sloman Pryor. © 6Aug36; A97328. Helen Sloman Pryor (A & W); 12Aug63; R320429.
Helen Sloman Pryor|A & W