[LITERARY AUTOGRAPHS]. DE LA ROCHE, MAZO. Autograph Signature of Canadian Author Mazo de la Roche. 1930s. Original autograph signature of Canadian author Mazo de la Roche, written in vintage fountain pen ink on a 4” x 3” piece of paper. Fine. Mazo de la Roche (1879 - 1961) is best known as the author of the popular Jalna series or the Whiteoak Chronicles which served as the basis of the 1935 film Jalna and the 1972 CBC television series Whiteoaks of Jalna.