Note 46 — HARVARD LAW REVIEW
Reading edition
This limitation upon the right to prevent the publication of private letters was recognized early:—
"But, consistently with this right [of the writer of letters], the persons to whom they are addressed may have, nay, must, by implication, possess the right to publish any letter or letters addressed to them, upon such occasions, as require, or justify, the publication or public use of them; but this right is strictly limited to such occasions. Thus, a person may justifiably use and publish, in a suit at law or in equity, such letter or letters as are necessary and proper, to establish his right to maintain the suit, or defend the same. So, if he be aspersed or misrepresented by the writer, or accused of improper conduct, in a public manner, he may publish such parts of such letter or letters, but no more, as may be necessary to vindicate his character and reputation, or free him from unjust obloquy and reproach." Story, J., in Folsom v. Marsh, 2 Story, 100, 110, 111 (1841).
The existence of any right in the recipient of letters to publish the same has been strenuously denied by Mr. Drone; but the reasoning upon which his denial rests does not seem satisfactory. Drone on Copyright, pp. 136-139.