MLA
Union Patriotic Envelope - "The Massachusetts Pine. 'I Give My Rafters to His Boat / My Billets to His Boiler's Throat; / And I Will Swim the Ancient Sea / To Float My Child to Victory, / and Grant to Dwellers with the Pine / Dominion o'Er the Palm and Vine. 1861. Stuart A. Rose Manuscript, Archives, and Rare Book Library, Box 21, Folder 7. https://digital.library.emory.edu/purl/3074tmphb2-cor.
APA, 6th edition
Union patriotic envelope - "The Massachusetts Pine. 'I give my rafters to his boat / My billets to his boiler's throat; / And I will swim the ancient sea / To float my child to victory, / and grant to dwellers with the pine / Dominion o'er the palm and vine (Box 21, Folder 7). (1861). [Envelopes]. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3074tmphb2-cor.
Chicago
“Union Patriotic Envelope - ‘The Massachusetts Pine. 'I Give My Rafters to His Boat / My Billets to His Boiler's Throat; / And I Will Swim the Ancient Sea / To Float My Child to Victory, / and Grant to Dwellers with the Pine / Dominion o'Er the Palm and Vine.” Envelopes. Civil War Collection, 1861. Box 21, Folder 7. Stuart A. Rose Manuscript, Archives, and Rare Book Library. https://digital.library.emory.edu/purl/3074tmphb2-cor.