#515 Delta Phi pin; cross shape, gold and black, 1907-1907 Box 102A, Folder 46 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#516 Sigma Xi; gold, 1904-1904 Box 102A, Folder 47 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#517 Tau Delta Psi; gold and blue; T-shape, 1873-1873 Box 102B, Folder 48 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#518 Key; Phi Beta Kappa; gold, 1929-1929 Box 102B, Folder 49 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#519 Sigma Delta Psi Athletic Honorary Society "Committee Key"; square; blue and gold, 1896-1896 Box 102B, Folder 50 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#51 Plate for title page of Bishop Berkeley's "Theory of Vision"; Copper and wood, undated Box 11, Folder 10 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#520 Kappa Sigma Epsilon; black and gold; square, 1853-1853 Box 102B, Folder 51 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#521 Kappa Sigma Epsilon; star-shaped, black and gold, 1863-1863 Box 102B, Folder 52 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#522 Psi Upsilon; triangle shape, black and gold, 1882-1882 Box 102B, Folder 53 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…
#523 He Boule; black and gold; triangle shape, 1882-1882 Box 102B, Folder 54 Bookmark Collection Context Yale University -Manuscripts and Archives Yale objects collection, 1697-2002…