Charles Darwin’s iconic Tree of Life notebooks – stolen and then returned to Cambridge University Library earlier this year – go on display this weekend.

The famous 1837 Tree of Life sketch is part of a new exhibition opening at the university library in West Road on Saturday, July 9, 2022.

Royston Crow: Charles Darwin's 1837 Tree of Life sketchCharles Darwin's 1837 Tree of Life sketch (Image: Cambridge University Library)

The precious notebook was one of two that went missing from the library in 2001.

Staff initially believed they may have been misshelved. However, after extensive searches of the library, the manuscripts were reported as stolen to Cambridgeshire Police in October 2020.

The force launched an investigation and notified Interpol, with the university making a worldwide appeal for information.

Royston Crow: Librarian, Happy Easter, X - The typed note and gift bag used to return the notebooksLibrarian, Happy Easter, X - The typed note and gift bag used to return the notebooks (Image: Cambridge University Library)

Almost a year-and-a-half later, they were returned anonymously on March 9 of this year in a pink gift bag – with a typed note on an envelope wishing a 'Happy Easter' to the librarian.

Now they are back home, they are going on display in a ground-breaking new exhibition called ‘Darwin in Conservation’.

Housed behind glass in a new, bespoke and high-security exhibition case, it will be the first time this century that they have gone on public display at Cambridge University Library.

Royston Crow: The two notebooks, which went missing in 2001 before an Interpol search in 2020The two notebooks, which went missing in 2001 before an Interpol search in 2020 (Image: Cambridge University Library)

A spokesperson said: "Darwin in Conversation examines how the great naturalist sought help from a cast of thousands of men, women and even children globally as he wrote his foundational works on evolutionary biology."

As well as the returned Darwin notebooks, other objects going on display include Darwin’s personal first edition of Origin of the Species, the squeaky kidney beans which became a viral ASMR hit, and the beautifully illustrated sketchbooks from the voyage of HMS Beagle.

Royston Crow: One notebook contained Charles Darwin's famous 1837 Tree of Life sketch, which sets out the theory of evolutionOne notebook contained Charles Darwin's famous 1837 Tree of Life sketch, which sets out the theory of evolution (Image: Cambridge University Library)

The exhibition also includes personal letters from early girlfriends of Darwin, and the famously vexed correspondence where he declares that: "I hate myself, I hate clover and I hate bees."

The exhibition is free and will run until December 3. Book tickets via www.lib.cam.ac.uk/darwin

Darwin in Conversation transfers to New York Public Library in 2023.

The Darwin Archive at Cambridge is by far the largest and most significant collection of his material anywhere in the world.

Royston Crow: Dr Jessica Gardner when the manuscripts were returnedDr Jessica Gardner when the manuscripts were returned (Image: Cambridge University Library)