The Rodakio Publications present the book "Zak/Zackie Oh" which was released in June 2019 as a co-publication with the Onassis Foundation's Stegi Grammaton. A book about courage, freedom, and love with texts by Zak Kostopoulos and a foreword by his brother Nikos. A project that started two years ago by Zak Kostopoulos, journalist Maria Louka, and photographer Alexandros Katsis, as a compilation of words, thoughts, and images about the importance of being different.

Maria Louka wrote the introduction and anthologized Zak's texts, and Yiannis Karpozis wrote the epilogue. It contains 37 photographs by Alexandros Katsis and photographs from the Kostopoulos family archive.