Concepción Gimeno de Flaquer (Alcañiz, 1850-Buenos Aires, 1919) was a Spanish journalist, newspaper editor, and author, who dedicated her life to the world of letters. She was also an intrepid international traveler at a time when it was not easy to cross the Atlantic. As a transatlantic author, she wrote novels, short stories, essays, opinion pieces, social commentary, and theater reviews. This book explores how Concepción Gimeno de Flaquer's evolution as a writer was closely linked to the development of her political-literary project, in which a feminist activist agenda plays an important role. This critical edition contributes to existing research on Gimeno de Flaquer by examining a collection of texts that have not been studied in-depth. This monograph-length publication is the first one to feature a translation of significant portions of Gimeno de Flaquer's work. 'Concepción Gimeno de Flaquer (1850-1919): Her Personal Letters, Short Stories, and Journalism' includes ten letters that Concepción Gimeno wrote to the Spanish actor and theatre entrepreneur Manuel Catalina y Rodríguez (1820-1886), seven short stories, and a selection of her seventeen most representative newspaper articles.