New York: Simon & Schuster - Wanderer Books, (1981.). First edition - Illustrated by Paul Frame, cover art by Ruth Sanderson. When a model disappears, Nancy takes her place in a benefit fashion show, only to discover that some of the clothes she was supposed to wear have also been stolen. ISBN: 0-671-423592.

New York: Grosset & Dunlap, (ca 1956, c. 1930.) dj. Hardcover - Plain frontispiece. Dark blue and white "digger" endpapers. Original text with 25 chapters and 200 pp. Front flap of dj lists thru 'The Hidden Window' mystery.

New York: Grosset & Dunlap, (1986, c 1971.). Hardcover - Cover by Rudy Nappi. Lists to #56 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and 5 internal drawings. Format 19 with oval endpapers. 177 pp. plus 2 pp publisher's ads. ISBN: 0-448-095181.

New York: Grosset & Dunlap, (1985, c 1967.). Hardcover - Cover by Rudy Nappi. Lists to #56 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and 5 internal drawings. Format 19 with oval endpapers. 178 pp. plus 2 pp publisher's ads. ISBN: 0-448-095254.

New York: Grosset & Dunlap, (1985, c 1968.). Hardcover - Cover by Rudy Nappi. Lists to #56 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and 5 internal drawings. Format 19 with oval endpapers. 174 pp. plus 2 pp publisher's ads. ISBN: 0-448-095289.

New York: Grosset & Dunlap, (1985, c 1965.). Hardcover - Cover by Rudy Nappi. Lists to #56 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and 5 internal drawings. Format 19 with oval endpapers. 176 pp. plus 2 pp publisher's ads. ISBN: 0-448-095424.

New York: Grosset & Dunlap, (ca 1985, c 1972.). Hardcover - Cover by Rudy Nappi. Lists to #56 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and 5 internal drawings. Format 19 with oval endpapers. 182 pp. plus 1 pp publisher's ads. ISBN: 0-448-095122.

New York: Grosset & Dunlap, (ca 1977, c 1960.). Hardcover - Cover by Rudy Nappi. Lists to #54 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and internal drawings. Format 18 with white multi-scene endpapers. 180 pp. plus 1 pp publisher's ads. ISBN: 0-448-095378.

New York: Grosset & Dunlap, (ca 1985, c 1969.). Hardcover - Cover by Rudy Nappi. Lists to #56 on back cover and on order form in rear of book. Illustrated with a plain frontispiece and 5 internal drawings. Format 19 with oval endpapers. 175 pp. plus 1 pp publisher's ads. ISBN: 0-448-095467.

New York: Grosset & Dunlap, (c 1960.) dj. Hardcover - Revised edition - "this new story for today's readers is based on the original of the same title. Illustrated with a plain frontispiece and several en texte drawings. Blue tweed cloth covers with dark blue silhouette of Nancy on front cover, blue multi-scene endpapers. Twenty chapters, 180 pp.

New York: Grosset & Dunlap, (ca 1954, c. 1930.) dj. Hardcover - Plain frontispiece. Dark blue and white "digger" endpapers. Original text with 25 chapters and 200 pp. Front flap of dj lists thru 'The Scarlet Slipper' mystery.

New York: Grosset & Dunlap, (1937 c 1931.). Hardcover - Farah's (10th edition) 1937B-20. In the original thicker format, bound in light blue cloth with orange lettering and a silhouette of Nancy with a magnifying glass on the front cover, orange silhouette endpapers. Glossy frontispiece and 3 glossy internals (the last printing to have the glossy internals) Illustrated by Russell Tandy. 203 pp plus 1 pp publisher's ad (lists ND to #13).

Bedford, MA: Applewood Books, (1999.) dj. Hardcover first edition - Four glossy photographs reproducing the original illustrations precede the title page. Publisher's note. "The originals as you remembered them." The original text from 1935. Illustrated by Russell Tandy and with his original dust jacket art. 218 pp. plus lists of other series books.

New York: Grosset & Dunlap, (ca 1971, c 1935.). Hardcover - Bound in illustrated boards with blue multi-scene endpapers. Frontispiece. Original text with 25 chapters, 218 pp.

New York: Grosset & Dunlap, (1945, c 1930.) dj. Hardcover - Smooth blue covers with orange silhouette of Nancy on front cover, orange and white magnifying glass endpapers. Plain frontispiece and wartime notice on title page. Farahs (10th ed) 1945A-32. Original text with 25 chapters, 204 pp.

New York: Grosset & Dunlap, (1941.) dj. Hardcover first edition - Illustrated by Russell H. Tandy with plain frontispiece. Printed on 'good quality' paper (later printings had the 'wartime paper'), in the uncommon original thick blue format. Page 215 has the draft title 'The Quest of the Telltale Map' which only appeared in the first three printings. Farah's (10 ed) 1941C-3. 215 pp.

New York: Grosset & Dunlap, (c. 1961.) dj. Hardcover - Illustrated. Yellow spine matte illustrated covers, blue and white multi-scene endpapers. 20 chapters, 178 pp.

New York: Grosset & Dunlap, (c 1933.). Hardcover - Glossy frontispiece and three glossy internal illustrations by Russell Tandy, in the uncommon original thick blue format. One of the 3 titles written by Walter Karig using the 'house name' of Carolyn Keene (all of the earlier titles had been written by Mildred Wirt Benson, but she refused to accept a reduction in the amount paid per manuscript - from $125 to $75) . This was originally #9 in the series (in 1932) but was issued in a revised edition in 1933 and re-numbered as #10 in the series. 220 pp.

New York: Grosset & Dunlap, (1932.). Hardcover - The first of 3 titles written by Walter Karig using the 'house name' of Carolyn Keene (all of the earlier titles had been written by Mildred Wirt Benson, but she refused to accept a reduction in the amount paid per manuscript - from $125 to $75) . Glossy frontispiece and three internal illustrations by Russell H. Tandy. Lists through #8 in the front of the book in the ads in the back. In the uncommon original thick blue format. Farah's 1933A-5. 209 pp. plus 10 pp publisher's ads.

New York: Grosset & Dunlap, (1941 c 1933.) dj. Hardcover - Glossy frontispiece by Russell Tandy, in the uncommon original thick blue format. One of the 3 titles written by Walter Karig using the 'house name' of Carolyn Keene (all of the earlier titles had been written by Mildred Wirt Benson, but she refused to accept a reduction in the amount paid per manuscript - from $125 to $75) . This was originally #9 in the series (in 1932) but was issued in a revised edition in 1933 and re-numbered as #10 in the series. Farah's (10th ed) 1941B-19. 220 pp.