The two knights of the swan, Lohengrin and Helyas
Subtitle: a study of the legend of the swan-knight, with special reference to its most important developments
By: by Robert Jaffray. 
Publisher: G. P. Putnam's sons
Published: 1910
Place of publication: New York; London
Language: eng
Number of pages: 123
Subjects: Lohengrin.; Chevalier au cygne.