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.

• Jewish*Neuman. A classification of riddles will be found in Lehmann-Nitsche Zs. f. Vksk. XXIV 240ff. and in Von Sydow and Christiansen Iriska gåtor (Folkminnen och Folktankar, II 65–80, VI 120–48).
• general **J. B. Friedreich Geschichte des Räthsels (Dresden, 1860)
• general **Taylor English Riddles in Oral Tradition (Berkeley, 1951), A Bibliography of Riddles (FFC CXXVI)
• general R. Petsch Das deutsche Volksrätsel (Strassburg, 1917)
• general *Anderson FFC XLII 3ff.
• general *Chauvin VI 42 No. 207