Where the material comes from

Novus Learn writes its own explanations and points you at other people's libraries for the source material. Every one of those libraries is listed on the sources page with the licence it publishes, the credit it asks for, and the date a person last read those terms.

The page is generated from the registry, so it cannot quietly fall out of step with what the site actually links to.

Each entry says how the source is used. 'Linked only' means nothing from it is reproduced here; you are being sent to the original. 'Reproduced or adapted' means some of that material appears inside Novus Learn, which carries obligations for licence, attribution, accessibility and corrections.

Linked is the default, and an entry moves only after someone has read the terms and taken responsibility for keeping them current. That is a deliberate order: linking costs a working link, copying costs a permanent commitment.

Most of these libraries are catalogues, not single works. A Wikimedia article's text is CC BY-SA while a photograph on the same page may be under something else entirely, and the Library of Congress, DOAJ, Openverse and the Smithsonian all hold items with their own separate terms.

Where that is true the entry is flagged, and the licence shown describes the collection rather than any particular thing inside it. If you intend to reuse a specific item, open it and read its own rights statement.

Two dates appear on each entry: when a person last read the licence, and when the entry itself was last reviewed. They record work that was done. Neither is a promise that the publisher has not changed its terms since.

Nothing on that page is legal advice. It exists so you can see what we relied on and check it yourself, which is the same standard the rest of the site holds its sources to.