2026 Reading Challenge

Join the Goodreads Author Program

Are you D.P. Costello, author of the books below?
The Rag Tree by D.P. Costello The Blind Owl by Sadegh Hedayat Nikolai Negorev, or the Successful Russian by Ivan Kushchevsky The Oxford Russian-English Dictionary by Marcus Wheeler


To join the author program as D.P. Costello, you will first need to sign in to Goodreads. Then navigate back to this page to apply.


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