In addition to Greek mythology, there are also many famous legends about Greek historical figures.
Research Tip: You can find articles about the main historical figures at Wikipedia (like Alexander the Great, for example, or Cleopatra), and these books can also be helpful: The Story of the Greeks by H. A. Guerber, Historic Tales of Greece by Charles Morris, The Story of Greece by Mary Macgregor, and Stories of the Ancient Greeks by Charles D. Shaw.
Past Projects: