Robert Stevenson Liszt's "Favorite" California Pupil. Hugo Mansfeldt (1844–1932). Part I in: JALS, Bd. 21, 1987, S. 42–58
Robert Stevenson Liszt's "Favorite" California Pupil. Hugo Mansfeldt (1844–1932). Part II in: JALS, Bd. 22, 1987, S. 27–45
Charles Timbrell On the Trail of Liszt, Chopin and Sand: 1834–1847 in: Piano Quarterly, Bd. 34, Fall 1986, S. 49–56
Robert Stevenson Liszt in the Iberian Penisula in: Inter-American Music Review, Bd. 7, Frühling-Sommer 1986, S. 3–22
Robert Stevenson Liszt 's "Favorite" California Pupil. Hugo Mansfeldt (1844–1932) in: Inter-American Music Review, Bd. 7, 1986, S. 33–78