Andrenio (Gómez de Baquero), Novelas y novelistas, Madrid, 1918, pp. 11-112.
Anonymous, "Benito Pérez Galdós," in The Drama, May, 1911, pp. 1-11 (vol. I).
Azorín, "Don Benito Pérez Galdós," in Blanco y negro, no. 1260 (July 11, 1915).
Azorín, Lecturas españolas, Madrid, 1912, pp. 171-76.
R. E. Bassett, in Modern Language Notes, XIX (1904), pp. 15-17.
Luis Bello, Ensayos e imaginaciones sobre Madrid, Madrid, 1919, pp. 95-129.
Christian Brinton, "Galdós in English," in The Critic, vol. 45 (1904), pp. 449-50.
Manuel Bueno, Teatro español contemporáneo, Madrid, 1909, pp. 77-107.
Barrett H. Clark, The Continental Drama of To-day, New York, 1915, pp. 228-32.
Barrett H. Clark, in Preface to Masterpieces of Modern Spanish Drama, New York, 1917.