• American companies established in 1973‎ (55 P)

A

• 1973 establishments in Alabama‎ (10 P)
• 1973 establishments in Alaska‎ (15 P)
• 1973 establishments in American Samoa‎ (1 P)
• 1973 establishments in Arizona‎ (13 P)
• 1973 establishments in Arkansas‎ (10 P)

C

• 1973 establishments in California‎ (1 C, 154 P)
• 1973 establishments in Colorado‎ (14 P)
• 1973 establishments in Connecticut‎ (1 C, 17 P)

D

• 1973 establishments in Delaware‎ (2 P)

F

• 1973 establishments in Florida‎ (4 C, 58 P)

G

• 1973 establishments in Georgia (U.S. state)‎ (24 P)
• 1973 establishments in Guam‎ (1 P)

H

• 1973 establishments in Hawaii‎ (14 P)

I

• 1973 establishments in Idaho‎ (5 P)
• 1973 establishments in Illinois‎ (51 P)
• 1973 establishments in Indiana‎ (1 C, 19 P)
• 1973 establishments in Iowa‎ (9 P)

K

• 1973 establishments in Kansas‎ (7 P)
• 1973 establishments in Kentucky‎ (19 P)

L

• 1973 establishments in Louisiana‎ (19 P)

M

• 1973 establishments in Maine‎ (13 P)
• 1973 establishments in Maryland‎ (22 P)
• 1973 establishments in Massachusetts‎ (35 P)
• 1973 establishments in Michigan‎ (27 P)
• 1973 establishments in Minnesota‎ (23 P)
• 1973 establishments in Mississippi‎ (7 P)
• 1973 establishments in Missouri‎ (24 P)
• 1973 establishments in Montana‎ (7 P)

N

• 1973 establishments in Nebraska‎ (8 P)
• 1973 establishments in Nevada‎ (15 P)
• 1973 establishments in New Hampshire‎ (7 P)
• 1973 establishments in New Jersey‎ (17 P)
• 1973 establishments in New Mexico‎ (13 P)
• 1973 establishments in New York (state)‎ (1 C, 50 P)
• 1973 establishments in North Carolina‎ (24 P)
• 1973 establishments in North Dakota‎ (3 P)

O

• 1973 establishments in Ohio‎ (30 P)
• 1973 establishments in Oklahoma‎ (9 P)
• 1973 establishments in Oregon‎ (38 P)

P

• 1973 establishments in Pennsylvania‎ (34 P)
• 1973 establishments in Puerto Rico‎ (12 P)

R

• Railway stations in the United States opened in 1973‎ (25 P)
• 1973 establishments in Rhode Island‎ (6 P)

S

• 1973 establishments in South Carolina‎ (18 P)
• 1973 establishments in South Dakota‎ (4 P)

T

• 1973 American television series debuts‎ (76 P)
• 1973 establishments in Tennessee‎ (21 P)
• 1973 establishments in Texas‎ (53 P)
• 1973 establishments in the United States Virgin Islands‎ (2 P)

U

• 1973 establishments in Utah‎ (6 P)

V

• 1973 establishments in Vermont‎ (2 P)
• 1973 establishments in Virginia‎ (31 P)

W

• 1973 establishments in Washington (state)‎ (35 P)
• 1973 establishments in Washington, D.C.‎ (26 P)
• 1973 establishments in West Virginia‎ (3 P)
• 1973 establishments in Wisconsin‎ (21 P)
• 1973 establishments in Wyoming‎ (2 P)

A

• AdventHealth
• American Legislative Exchange Council
• American Politics Research
• American Rivers
• American Society for the Defense of Tradition, Family and Property
• American Society of Reclamation Sciences
• Astounding Award for Best New Writer

B

• Baseball Chapel
• Black Magic (comics)
• Board for International Broadcasting

C

• Catholic League (U.S.)
• Chief Officers of State Library Agencies
• Children's Defense Fund
• Commission on Private Philanthropy and Public Needs
• Communist Workers' Party (United States)
• Congress of Russian Americans
• Conservative Political Action Conference
• COYOTE

D

• De la Torre Bueno Prize
• Depository Trust Company

H

• The Heritage Foundation

I

• Institute for Biblical Research
• International Childfree Day
• International Committee Against Racism

J

• John Bunn Award
• John W. Campbell Memorial Award for Best Science Fiction Novel

L

• Labor Council for Latin American Advancement

M

• Mid-South Association of Non-Public Schools
• Mining Enforcement and Safety Administration

N

• National Alliance for Hispanic Health
• National Association for Ambulatory Urgent Care
• National Black Feminist Organization
• National LGBTQ Task Force
• National News Council
• North American Society for Oceanic History

P

• President's Export Council

R

• Robert J. Trumpler Award

S

• Society for Advancement of Chicanos and Native Americans in Science
• Society of Interventional Radiology
• State House (train)

T

• Time Warner Cable
• Turboliner
• Tyler Prize for Environmental Achievement

U

• United Soccer Coaches College Coach of the Year
• United States Army Forces Command

V

• The Violin Society of America

W

• The Washington Post Writers Group
• Widowed Persons Service
• Women's Equality Day