SEVEN KEYS TO BALDPATE (Mystery Classic): Mysterious Thriller in a Closed Mountain Hotel
by Earl Derr Biggers
ISBN 13: 9788027332991
Format: Paperback (124 pages) Publisher: e-artnow Published: 15 Apr 2019
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The Agony Column
ISBN 13: 9780809530885
Format: Hardcover (108 pages) Publisher: Wildside Press Published: 08 Sep 2003
Inside the Lines
by Earl Derr Biggers, Robert Welles Ritchie
ISBN 13: 9781592242580
Format: Hardcover (356 pages) Publisher: Wildside Press Published: 25 Aug 2003
Fifty Candles
ISBN 13: 9781544082639
Format: Paperback (66 pages) Publisher: CreateSpace Independent Publishing Platform Published: 16 Mar 2017
Love Insurance
by Earl Derr Biggers,Ravell
ISBN 13: 9781981308934
Format: Paperback (200 pages) Publisher: CreateSpace Independent Publishing Platform Published: 30 Nov 2017
Behind That Curtain
ISBN 13: 9781618953209
Format: Hardcover (184 pages) Publisher: Bibliotech Press Published: 26 Jul 2018
Seven Keys to Baldpate
ISBN 13: 9781544096810
Format: Paperback (198 pages) Publisher: CreateSpace Independent Publishing Platform Published: 16 Mar 2017
ISBN 13: 9781515424895
Format: Hardcover (88 pages) Publisher: Black Curtain Press Published: 03 Apr 2018
ISBN 13: 9783734084225
Format: Paperback (78 pages) Publisher: Outlook Verlag Published: 25 Sep 2019
The House Without A Key
ISBN 13: 9781515448372
Format: Paperback (208 pages) Publisher: Wilder Publications Published: 01 Jan 2021
The House Without a Key (Mint Editions―Voices From API)
by Earl Derr Biggers, Mint Editions
ISBN 13: 9781513137100
Format: Paperback (678 pages) Publisher: Mint Editions Published: 01 Sep 2022
ISBN 13: 9789356575707
Format: Paperback (154 pages) Publisher: Alpha Editions Published: 15 Sep 2022