Gordon, Mary. There Your Heart Lies. Pantheon Books, 2017.
From the award-winning, much loved writer: a deeply moving novel about an American woman's place during the Spanish Civil War, the lessons she took from it, and how her story will shape her granddaughter's path

Hemingway, Ernest. The Sun Also Rises. Scribner, 1996.
Published in 1940, For Whom the Bell Tolls tells the story of Robert Jordan, a young American in the International Brigades attached to an antifascist guerilla unit in the mountains of Spain. In his portrayal of Jordan’s love for the beautiful Maria and his superb account of El Sordo’s last stand, in his brilliant travesty of La Pasionaria and his unwillingness to believe in blind faith, Hemingway surpasses his achievement in The Sun Also Rises and A Farewell to Arms to create a work at once rare and beautiful, strong and brutal, compassionate, moving, and wise.

Orwell, George. Homage to Catalonia. Houghton Mifflin Harcourt, 2010.
Homage to Catalonia is both a memoir of Orwell's experience at the front in the Spanish Civil War and a tribute to those who died in what he called a fight for common decency. Originally published in the United Kingdom in 1938.

Sansom, C. J. Winter in Madrid: A Novel. Penguin Books, 2009.
September 1940: the Spanish Civil War is over, Madrid lies in ruin, while the Germans continue their march through Europe, and General Franco evades Hitler’s request that he lead his broken country into yet another war. Into this uncertain world comes a reluctant spy for the British Secret Service, sent to gain the confidence of Sandy Forsyth, an old school friend turned shady Madrid businessman. Meanwhile, an ex-Red Cross nurse is engaged in a secret mission of her own. Through this dangerous game of intrigue, C. J. Sansom’s riveting tale conjures a remarkable sense of history unfolding and the profound impact of impossible choices.