Noah Haynes Swayne,
Blackburn v. Crawfords — Opinion of the Court
“ If offered to prove a marriage, the production of the memorandum would have been necessary, for two reasons: it would have been the best evidence of the existence and contents of the entry, and would have given to the adverse party the means, to which he was entitled, of a cross-examination. Here it was proposed to use the testimony negatively. The object was to draw the inference that the marriage had not occurred, from the fact that no entry of its was found to exist. We think the same considerations apply as if the purpose had been to prove a marriage affirmatively. ”
