I have written seven books about the history of places I have travelled to. If you are interested in history and / or travel then you should check out these books. Please bear in mind the books are travelogues rather than travel guides and so cover only the places I visited.
Here is the one about 9 Greek Islands:
This book keeps it simple and covers nine Greek Islands: Rhodes, Symi, Patmos, Samos, Syros, Paros, Tinos, Delos, and Mykonos. They are all different and all lovely.