Wigmore, John Henry. A Students' Textbook of the Law of Evidence (Chicago: The Foundation Press, 1935).
Existing Citations
best evidence (p.219 (mentioned in Black's 2009)): "And today, though the cant phrase is sometimes invoked, and though an inference may be made against a party who fails to produce what might be better evidence, yet no court will in general exclude relevant evidence because there might be better evidence available." (†1416)