Independence Hall Association
U.s. History: Flag Picture Gallery
This is a collection of American flags in color with a description of their reason for existence. Very appealing site.
US National Archives
Nara: Panoramic Photography Exhibit
View 21 panoramic photos from the National Archives collection that feature images of natural disaster sites, major construction projects, military units, and the like.
Other
Us flag.org: Standard Proportions for the United States Flag
What are the standard proportions for the United States Flag? This website gives a detailed picture of the official flag dimensions.
Curated OER
Mount Rushmore
Presents images and descriptive details of this national monument that features the faces of past U.S. Presidents: George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln.