I don't see this book (and the Tanglewood Tales) included in the online works. Perhaps there aren't any online texts available.
The way Hawthorne retold the ancient greek stories is very amusing. I love reading this little book with its story telling style. There's nothing new about the stories actually. They are just ancient greeks stories re-told, like the story of The Gorgons, Midas, Hercules, etc. But Hawthorne, re-write these stories wonderfully.
And FYI, last nite I got bad dreams after reading about the Gorgons/Medusa