Two notebooks belonging to Charles Darwin, one of which contains his iconic 1837 "Tree of Life" sketch, have been returned to Cambridge University.

The two notebooks – one of which includes Darwin’s famous 1837 “Tree of Life” sketch – were returned to Cambridge University’s Library in March 2022, the university said in a statement.

Charles Darwin made his famous sketch of the "Tree of Life," a representation of his idea of evolution, in a notebook that was missing for 20 years. (Stuart Roberts / Cambridge University Library) ...

It was thought for years that the Darwin notebooks had been mis-shelved in the vast archives at Cambridge University Library, before they were reported as stolen (Cambridge University Library/PA) ...

Electronic Laboratory Notebooks (ELNs) or Electronic Research Notebooks (ERNs) are software tools developed to replace traditional paper-based lab notebooks and to transition to digital record-keeping ...

The notebooks – valued in the millions – had been housed at the university north of London but were unaccounted for in 2001 and initially considered misplaced. But in 2020, the library issued a public ...

Two notebooks belonging to Charles Darwin, one of which contains his iconic 1837 "Tree of Life" sketch, have been returned to Cambridge University.

Two notebooks that contain the origins of Charles Darwin's theory of evolution have been mysteriously returned to Cambridge University's library, more than 20 years after they were reported missing.

Cambridge University Library first listed the notebooks as missing in 2001, after they were moved out of a strong room for special collections to be photographed.