A duplicate of Harper Lee’s seminal 1960 work was found in a field of American books given to Oxfam’s bookshop in Portobello Highway, west London.
It has been acquired by the British Library and can be part of the establishment’s nationwide assortment.
Store supervisor Olivia Haysman-Walker, who established the novel was a primary US version, stated: “It may so simply have been missed.
“There have been numerous books to work via within the donation, however we recognised To Kill A Mockingbird and thought it was price taking a better look.
“We realised fairly shortly that we had one thing actually particular.
“The mud jacket confirmed its age, and though it was worn across the edges, the pages inside have been in lovely situation.
“It’s wonderful to suppose that this e-book has handed via our Oxfam bookshop and into the nationwide assortment on the British Library.
“It actually has been fairly a journey, and it’s a stunning reminder, throughout Second Hand September, of the type of treasures that may be hiding among the many cabinets and donations in our retailers.”
Second Hand September is Oxfam’s annual marketing campaign encouraging folks to purchase second-hand.
Lee’s Pulitzer Prize-winning e-book tells the story of lawyer Atticus Finch as he defends Tom Robinson, a black man wrongly accused of a raping a white lady.
Her story of racial injustice and childhood innocence, set in Alabama in 1934, has bought greater than 40 million copies all over the world and has been translated into 40 languages.
The US novelist, who was awarded the Presidential Medal of Freedom, died in 2016 on the age of 89.