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Oldest companies

#	Company	Founded
1	Cambridge University Press	1534
2	McCormick & Company	1669
3	Yale College	1701
4	Yale University	1701
5	Princeton University	1746
6	Perelman School of Medicine at the University of Pennsylvania	1765
7	Encyclopædia Britannica Inc.	1768
8	Transylvania University	1780
9	Jones Lang LaSalle	1783
10	University of Georgia	1785
11	University of Vermont	1791
12	ABCorp	1795
13	University of Louisville	1798
14	Middlebury College	1800
15	University of South Carolina	1801
16	Ohio University	1804
17	Wiley	1807
18	Castle Clinton	1808
19	Miami University	1809
20	Academy of Natural Sciences of Drexel University	1812
21	American Antiquarian Society	1812
22	E. Remington & Sons	1816
23	Harvard Divinity School	1816
24	Remington Arms	1816
25	Harper	1817
26	Bunge Limited	1818
27	University of Cincinnati	1819
28	University of Virginia School of Law	1819
29	Blair House	1824
30	Yale Law School	1824
31	KeyBank	1825
32	Lafayette College	1826
33	Yuengling	1829
34	University of Richmond	1830
35	Denison University	1831
36	New York University	1831
37	Rogers Locomotive and Machine Works	1832
38	C. F. Martin & Company	1833
39	Haverford College	1833
40	Mercer University	1833
41	Oberlin College	1833
42	Long Island Rail Road	1834
43	Tulane University	1834
44	Currier and Ives	1835
45	United States National Library of Medicine	1836
46	Davidson College	1837
47	DePauw University	1837
48	Invicta Watch Group	1837
49	Mount Holyoke College	1837
50	Tiffany & Co.	1837
51	Framingham State University	1839
52	Dun & Bradstreet	1841
53	Punahou School	1841
54	Case Corporation	1842
55	Ohio Wesleyan University	1842
56	College of the Holy Cross	1843
57	Church & Dwight	1846
58	City College of New York	1847
59	University of Iowa	1847
60	Chicago Board of Trade	1848
61	Democratic National Committee	1848
62	University of Wisconsin System	1848
63	University of Wisconsin–Madison	1848
64	Fort Bliss	1849
65	Union Iron Works	1849
66	American Express	1850
67	Boston Athenæum	1850
68	Lehman Brothers	1850
69	University of Dayton	1850
70	University of Rochester	1850
71	University of Utah	1850
72	Waltham Watch Company	1850
73	American Geographical Society	1851
74	Fruit of the Loom	1851
75	Illinois Central Railroad	1851
76	Northwestern University	1851
77	San Francisco Unified School District	1851
78	University of Minnesota	1851
79	Ghirardelli Chocolate Company	1852
80	Loyola University Maryland	1852
81	Smith & Wesson	1852
82	Studebaker	1852
83	University of Dubuque	1852
84	California Academy of Sciences	1853
85	Levi Strauss & Co.	1853
86	Otis Worldwide Corporation	1853
87	The Travelers Companies	1853
88	Washington University in St. Louis	1853
89	Lincoln University	1854
90	Timex Group USA	1854
91	Bates College	1855
92	Butler University	1855
93	Kansas Pacific Railway	1855
94	University of San Francisco	1855
95	M&T Bank	1856
96	Niagara University	1856
97	St. Lawrence University	1856
98	University of Maryland	1856
99	Bethlehem Steel	1857
100	California State University	1857

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