Further reading

Note: the term "melodium" seems interchangeable with the term "melodeon".

• Friedrich Köhler, Hermann Lambeck (1892) Hermann Lambeck , ed. Dictionary of the English and German Languages, P. Reclam jun., p. 307
  "​melodeon [me-lō'di-on] s. ♪ Ziehharmonica f. Melodion n (=melodium).
   melodium [me-lō'di-um] s. Melodion n (=melodeon). "
• (1890) The Century Dictionary, An Encyclopedic Lexicon of the English Language, 13, Century Company, p. 3,700
  "​melodeon (me-ˈlō'di-on). n. [Also melodium; < L. melodia, < Gr. μελωδία, a singing: see melody. Cf. melodion.] A reed-organ or harmonium.
   melodium (me-lō'di-um). n. See melodeon. "