Essential SQLAlchemy, 2nd Edition (2010)
Chapter 1. Introduction to SQLAlchemy
Chapter 3. Engines and MetaData
Chapter 4. SQLAlchemy Type Engines
Chapter 5. Running Queries and Updates
Chapter 6. Building an Object Mapper
Chapter 7. Querying and Updating at the ORM Level
Chapter 8. Inheritance Mapping
Chapter 9. Elixir: A Declarative Extension to SQLAlchemy
Chapter 10. SqlSoup: An Automatic Mapper for SQLAlchemy
Chapter 11. Other SQLAlchemy Extensions