Letter from Alfred C. Clark to Emile Berliner, 1896 Oct. 16

Envelopes labeled, "I", "II", "IV", "Sapphire" & "Ruby". "Ruby" is empty.
Accompanied by xerox of letter, and envelope from the laboratory of Emile Berliner labeled: "Letter from Alfred C. Clark, Oct. 16, 1896. Samples of jewel, etc. needles for gramophone reproduction."
Letter from Alfred C. Clark to Emile Berliner containing 5 small envelopes, each (except "Ruby") holding one gramophone needle that is described at length in the text of the letter.