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Oldest companies

#	Company	Founded
1	College of William & Mary	1693
2	Princeton University	1746
3	Columbia University Vagelos College of Physicians and Surgeons	1767
4	Encyclopædia Britannica Inc.	1768
5	Phillips Exeter Academy	1781
6	Harvard Medical School	1782
7	Dickinson College	1783
8	Jones Lang LaSalle	1783
9	University of Georgia	1785
10	University of North Carolina	1789
11	University of Vermont	1791
12	State Street Corporation	1792
13	Hamilton College	1793
14	Bowdoin College	1794
15	University of Tennessee	1794
16	University of Louisville	1798
17	Chase Bank	1799
18	Middlebury College	1800
19	University of South Carolina	1801
20	Wiley	1807
21	Castle Clinton	1808
22	Miami University	1809
23	American Antiquarian Society	1812
24	Princeton Theological Seminary	1812
25	Norwich University	1819
26	University of Cincinnati	1819
27	University of Virginia School of Law	1819
28	Indiana University Bloomington	1820
29	Amherst College	1821
30	Thomas Jefferson University	1824
31	Yale Law School	1824
32	KeyBank	1825
33	Furman University	1826
34	Lafayette College	1826
35	Denison University	1831
36	University of Alabama	1831
37	Wesleyan University	1831
38	Mercer University	1833
39	Oberlin College	1833
40	Currier and Ives	1835
41	Mobile County Public School System	1836
42	Hachette Book Group	1837
43	Little, Brown and Company	1837
44	Tiffany & Co.	1837
45	Southwestern University	1840
46	Brook Farm	1841
47	Grossman School of Medicine	1841
48	Punahou School	1841
49	Case Corporation	1842
50	The Citadel	1842
51	Villanova University	1842
52	Stanley Black & Decker	1843
53	Baylor University	1845
54	Brunswick Corporation	1845
55	Lycoming	1845
56	United States Naval Academy	1845
57	A. T. Cross Company	1846
58	Beloit College	1846
59	Carroll University	1846
60	Charles Scribner's Sons	1846
61	University at Buffalo	1846
62	Lawrence University	1847
63	Willard InterContinental Washington	1847
64	Democratic National Committee	1848
65	University of Wisconsin System	1848
66	University of Wisconsin–Madison	1848
67	Union Iron Works	1849
68	Lehman Brothers	1850
69	U.S. Bancorp	1850
70	University of Nebraska system	1850
71	Waltham Watch Company	1850
72	Corning Inc.	1851
73	Florida State University	1851
74	Saint Joseph's University	1851
75	Santa Clara University	1851
76	American Society of Civil Engineers	1852
77	Ghirardelli Chocolate Company	1852
78	Mills College at Northeastern University	1852
79	Aetna	1853
80	Bausch & Lomb	1853
81	Levi Strauss & Co.	1853
82	The Travelers Companies	1853
83	Washington University in St. Louis	1853
84	Hamline University	1854
85	Lincoln University	1854
86	Bates College	1855
87	Berea College	1855
88	Miller Brewing Company	1855
89	William Paterson University	1855
90	Chicago, Burlington and Quincy Railroad	1856
91	M&T Bank	1856
92	Niagara University	1856
93	Oregon State University	1856
94	St. Lawrence University	1856
95	University of Maryland	1856
96	Bethlehem Steel	1857
97	California State University	1857
98	Gallaudet University	1857
99	Northwestern Mutual	1857
100	Peabody Institute	1857

Top 100 entries with a recorded value; entries without data are not ranked.