Unknown to unknown notifying them that they have received their letter, 10 December 1859
MLA
Unknown to Unknown Notifying Them That They Have Received Their Letter, 10 December 1859. American History Module 1. [Place of production not identified: producer not identified, 1859
APA, 7th edition
(1859). Unknown to unknown notifying them that they have received their letter, 10 December 1859. American history module 1. [Place of production not identified: producer not identified
Chicago, 17th edition
Unknown to unknown notifying them that they have received their letter, 10 December 1859. American history module 1. [Place of production not identified: producer not identified, 1859