Originally Posted by Gordon Scott
It's also still the current term and dating at least from the 1920s, for papers presented in the UK government, which also is in distinction to Mike's description. It's from where I know the term and AFAICS it's been borrowed by (US?) businesses for a similar-ish purpose.
Yep, full credit is due to the brilliance of Sir Winston.

The term white paper originated with the British government, and Churchill’s White Paper (1922) is said to be one of the first famous examples.

Historically in Britain, government papers were colour coded. “White” signified public accessibility, and the term has stuck since then. Originally used by government offices, it is now used by large businesses and areas such as commerce and technology, for example.

White papers are issued to help the public, customers, or shareholders make educated decisions, understand an issue, and stay informed of changes.
Mike, the source is theidioms.com

Perhaps the only thing more rewarding than being educated, is educating those that need education.

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