Are There Data On Kowloon Walled City ??

Hey,
I’m currently researching the fascinating history of the Kowloon Walled City, and I’m hoping to find valuable insights or data related to this unique urban phenomenon. For those unfamiliar, the Kowloon Walled City was a densely populated, anarchic enclave in Hong Kong that existed until its demolition in 1993. It was a labyrinth of interconnected buildings, narrow alleyways, and makeshift infrastructure, housing an estimated 3.2 million people per square mile—an astonishing density that defied conventional urban planning.
more info here: https://en.wikipedia.org/wiki/Kowloon_Walled_City

Do you know whether there are public datasets about the whole area? like buildings, population, streets network and so on?

The best would be structured datasets, however also unstructured data (for instance image or pdf that can be easily parsed but with valuable information inside) are interesting.

Thanks for your time