Category:1866 establishments in the United States

• American companies established in 1866 (26 P)

A

• 1866 establishments in Alabama (14 P)
• 1866 establishments in Arizona Territory (3 P)
• 1866 establishments in Arkansas (11 P)

C

• 1866 establishments in California (37 P)
• 1866 establishments in Colorado Territory (7 P)
• 1866 establishments in Connecticut (9 P)

D

• 1866 establishments in Dakota Territory (1 P)
• 1866 establishments in Delaware (6 P)

F

• 1866 establishments in Florida (6 P)

G

• 1866 establishments in Georgia (U.S. state) (8 P)

I

• 1866 establishments in Idaho Territory (2 P)
• 1866 establishments in Illinois (21 P)
• 1866 establishments in Indiana (11 P)
• 1866 establishments in Iowa (18 P)

K

• 1866 establishments in Kansas (14 P)
• 1866 establishments in Kentucky (8 P)

L

• 1866 establishments in Louisiana (4 P)

M

• 1866 establishments in Maine (13 P)
• 1866 establishments in Maryland (15 P)
• 1866 establishments in Massachusetts (25 P)
• 1866 establishments in Michigan (30 P)
• 1866 establishments in Minnesota (15 P)
• 1866 establishments in Mississippi (7 P)
• 1866 establishments in Missouri (19 P)
• 1866 establishments in Montana Territory (5 P)

N

• 1866 establishments in Nebraska Territory (10 P)
• 1866 establishments in Nevada (8 P)
• 1866 establishments in New Hampshire (5 P)
• 1866 establishments in New Jersey (10 P)
• 1866 establishments in New Mexico Territory (2 P)
• 1866 establishments in New York (state) (66 P)
• 1866 establishments in North Carolina (3 P)

O

• 1866 establishments in Ohio (28 P)
• 1866 establishments in Oregon (14 P)

P

• 1866 establishments in Pennsylvania (33 P)

R

• Railway stations in the United States opened in 1866 (12 P)

S

• 1866 establishments in South Carolina (5 P)

T

• 1866 establishments in Tennessee (14 P)
• 1866 establishments in Texas (11 P)

U

• 1866 establishments in Utah Territory (10 P)

V

• 1866 establishments in Vermont (2 P)
• 1866 establishments in Virginia (20 P)

W

• 1866 establishments in Washington Territory (2 P)
• 1866 establishments in Washington, D.C. (4 P)
• 1866 establishments in West Virginia (9 P)
• 1866 establishments in Wisconsin (11 P)

0–9

• 10th Cavalry Regiment (United States)
• 25th Infantry Regiment (United States)
• 41st Infantry Regiment (United States)

A

• American Equal Rights Association

C

• Camp Grant, Arizona
• Chicago, Rock Island and Pacific Railroad
• Cincinnati, Richmond and Chicago Railroad

D

• Department of Dakota
• Department of the Platte

L

• The Land We Love

M

• Montpelier and St. Johnsbury Railroad

N

• National Labor Union

Q

• Quincy Railroad Bridge Company

S

• Savannah and Charleston Railroad
• Southwest Pacific Railroad

U

• Union Tank Car Company
• United States Army Indian Scouts
• United States Hydrographic Office
• Universal Peace Union
• Utica, Chenango and Susquehanna Valley Railway