Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Stone description: dark-gray

Wall Number Sort descending Country State Classification Source
12LA2 United States California Marble Colfax
S1-15 United States Massachusetts Granite Quincy
S1-18 United States Unknown Granite Unknown
S1-19 United States Unknown Granite Unknown
S1-21 Italy Granite Biella
S1-22 United States Massachusetts Granite Quincy
S1-24 United States Massachusetts Granite Quincy
S1-26 United States Massachusetts Granite Quincy
S1-29 United States Massachusetts Granite Quincy
S1-38 United States Pennsylvania Sandstone Wyoming
S1-40 United States Pennsylvania Sandstone Wyoming
S1-41 United States Pennsylvania Sandstone Wyoming
S1-42 United States Pennsylvania Sandstone Wyoming
S1-48 United States Pennsylvania Sandstone Wyoming
S1-50 United States Pennsylvania Sandstone Wyoming
S2-140 United States New York Marble Onondaga
S2-169 United States New York Marble Gouverneur
S2-49 United States Massachusetts Granite Quincy
S2-81 United States Massachusetts Granite Quincy