Mabel Colhoun, a pioneer who chronicled the 20th century

When a plaque was unveiled in Derry in 2017 honouring 'educationalist, historian, and archaeologist' Mabel Colhoun, her family admitted that they had not been fully aware of all that she had achieved.

Photographs by the pioneering archaeologist, explorer and educationalist Mabel Colhoun have been digitised as part of a new collection at the Tower Museum in Derry

Mabel Colhoun was a woman with many strings to her bow. She was a reforming educationalist, an explorer and a pioneering archaeologist, but a new digital archive of her photographs shows that she was also an exceptional chronicler of the 20th century.

That is not entirely surprising, as this singular woman lived through every decade of it, from her birth in Derry City in 1905 to her death, after a life lived to the full, in 1992.