Inside Alan Turing’s unpublished WWII code-breaking notebooks

Notebooks containing Alan Turing's unpublished WWII code-breaking work have been saved for the UK.
A fundraising campaign led by Friends of the Nations' Libraries secured the funds to purchase the notebooks, preventing their sale to an international bidder.
The notebooks detail Turing's "Delilah project," focusing on building a portable voice encoder.
A substantial donation from XTX Markets, along with contributions from other organisations and individuals, enabled King's College, Cambridge, to acquire the archive.
The notebooks will be added to the existing Turing collection at King's College and made available online for research and study.