Cite

[Two unnumbered autograph album pages with printed and manuscript letter signed A. Lincoln tipped in]

MLA

[Two Unnumbered Autograph Album Pages with Printed and Manuscript Letter Signed A. Lincoln Tipped in]. 0AD. https://collections.library.yale.edu/catalog/2030706.

APA, 6th edition

[Two unnumbered autograph album pages with printed and manuscript letter signed A. Lincoln tipped in]. (0 C.E.). [Autographs, Certificates]. https://collections.library.yale.edu/catalog/2030706.