In 1936 "The Hyborian Age: Conan's World", Howard laid out a somewhat detailed "canon" history of Conan's world, pre- and post-cataclysm.
This included verbal description of the world maps and where each people's and states were.
Are there any maps that are Howard canon (either drawn by him, or approved by him as matching the above work's canon description) of both pre- and post- Cataclysm Conan world?