The index’s own references — the collections where scholars sighted this story-shape, tradition by tradition. Titles on our shelf are live links; the rest is the frontier, not yet shelved.

• Irish*Cross
• IcelandicHrómundar saga Gr. 373–75 (Kára), Boberg
• Greek*Frazer Pausanias II 395.
• general *Type 451
• general **O. Rank Die Lohengrinsage (1911) 65f.
• general *Wehrhan Die Sage 50
• general *Wesselski Märchen 255 No. 64
• general *Chauvin VIII 206 No. 248
• general *G. Huet Romania XXXIV (1905) 206ff.
• general *Fb "svane" III 664ab
• general H. Am. Todd A propos of La Naissance du chevalier au cygne (MLN VI 2)
• general Krappe Apollon Kyknos (Classical Philology XXXVII 353–370)
• general *BP I 427ff.
• general Hibbard 248, *251. – English Romance: Wells 97 (Chevalere Assigne)