A

• [+] National Historic Sites in Alabama (2 P)
• [+] National Historic Sites in Alaska (1 P)
• [+] National Historic Sites in Arizona (2 P)
• [+] National Historic Sites in Arkansas (2 P)

C

• [+] National Historic Sites in California (4 P)
• [+] National Historic Sites in Colorado (3 P)
• [+] National Historic Sites in Connecticut (1 P)

D

• [+] National Historic Sites in Washington, D.C. (6 P)

G

• [+] National Historic Sites in Georgia (U.S. state) (3 P)

H

• [+] National Historic Sites in Hawaii (1 P)

I

• [+] National Historic Sites in Idaho (1 P)
• [+] National Historic Sites in Illinois (2 P)
• [+] National Historic Sites in Iowa (1 P)

K

• [+] National Historic Sites in Kansas (5 P)

M

• [+] International Historic Sites in Maine (1 P)
• [+] National Historic Sites in Maryland (3 P)
• [+] National Historic Sites in Massachusetts (7 P)
• [+] National Historic Sites in Missouri (2 P)
• [+] National Historic Sites in Montana (1 P)

N

• [+] National Historic Sites in Nebraska (1 P)
• [+] National Historic Sites in New Hampshire (1 P)
• [+] National Historic Sites in New York (12 P)
• [+] National Historic Sites in North Carolina (2 P)
• [+] National Historic Sites in North Dakota (2 P)

O

• [+] National Historic Sites in Ohio (3 P)
• [+] National Historic Sites in Oklahoma (2 P)

O cont.

• [+] National Historic Sites in Oregon (2 P)

P

• [+] National Historic Sites in Pennsylvania (9 P)

R

• [+] National Historic Sites in Rhode Island (1 P)

S

• [+] National Historic Sites in South Carolina (2 P)
• [+] National Historic Sites in South Dakota (1 P)

T

• [+] National Historic Sites in Tennessee (1 P)
• [+] National Historic Sites in Texas (1 P)

U

• [+] National Historic Sites in Utah (1 P)

V

• [+] National Historic Sites in Virginia (2 P)

W

• [+] National Historic Sites in Washington (U.S. state) (4 P)
• [+] National Historic Sites in Wyoming (1 P)

*

• List of areas in the United States National Park System
• List of the United States National Park System official units

A

• African-American Heritage Sites (U.S. National Park Service)

C

• Christiansted National Historic Site

N

• Native American Heritage Sites (U.S. National Park Service)

S

• San Juan National Historic Site

W

• Women's History Sites (U.S. National Park Service)