U.S. Marines passing up Penna. Avenue, inaugural parade, inauguration of President Roosevelt, Washington, D.C.

Theodore Roosevelt Jr., (October 27, 1858 – January 6, 1919) was an American statesman, author, explorer, soldier, naturalist, and reformer who served as the 26th President of the United States from 1901 to 1909. With the assassination of President William McKinley, Theodore Roosevelt, not quite 43, became the 26th President (1901-1909). He brought new excitement and power to the office, vigorously leading Congress and the American public toward progressive reforms and a strong foreign policy. As a leader of the Republican Party during this time, he became a driving force for the Progressive Era in the United States in the early 20th century. He established many new national parks, forests, and monuments intended to preserve the nation's natural resources. In foreign policy, he focused on Central America, where he began construction of the Panama Canal. He greatly expanded the United States Navy and sent the Great White Fleet on a world tour to project the United States' naval power around the globe. His successful efforts to end the Russo-Japanese War won him the 1906 Nobel Peace Prize. Elected in 1904 to a full term, Roosevelt continued to promote progressive policies. After leaving office, Roosevelt went on safari in Africa and toured Europe. Returning to the USA, he became frustrated with Taft's approach as his successor. Roosevelt founded his own party, the Progressive, so-called "Bull Moose" Party, and called for wide-ranging progressive reforms. The split among Republicans enabled the Democrats to win both the White House and a majority in the Congress in 1912 fatally weakening the Republican Party. Frustrated at home, Roosevelt led a two-year expedition in the Amazon Basin, nearly dying of a tropical disease. During World War I, he opposed President Woodrow Wilson for keeping the U.S. out of the war against Germany, and offered his military services, which were never summoned. Although planning to run again for president in 1920, Roosevelt suffered deteriorating health and died in early 1919. Roosevelt has consistently been ranked by scholars as one of the greatest U.S. presidents. His face was carved into Mount Rushmore alongside those of George Washington, Thomas Jefferson, and Abraham Lincoln. "Whenever you are asked if you can do a job, tell 'em, 'Certainly I can!' Then get busy and find out how to do it."

Stereographs are devices capable of building a three-dimensional​ image out of two photographs that have about two and a half inches difference between them so that it could imitate the two eyes’ real field of view. Combining these images into a single one with the help of stereoscope, a person can experience the illusion of the image’s depth. Stereoscope uses the same principle as in human binocular vision. Our eyes are separated by about two inches, so we see everything from two different angles. When the brain combined those views in a single picture, we get the spatial depth and dimension. Stereographs were extremely popular between 1850 and 1930 all around the world. Millions of stereographs were made during that time. There was a broad range of themes: landscape, travel, historical moments, nature disasters, architecture and many others. Nowadays, simply launch this collection full screen and put your mobile device in Google Cardboard Viewer.

The United States Marine Corps traces its roots to the Continental Marines of the American Revolutionary War, formed by a resolution of the Second Continental Congress on 10 November 1775. That date is celebrated as the Marine Corps's birthday. Throughout the late 19th and 20th centuries, Marine detachments served aboard Navy cruisers, battleships, and aircraft carriers. About 600,000 Americans served in the U.S. Marine Corps in World War II, performed a central role in the Pacific War. The Pacific theatre battles saw fierce fighting between Marines and the Imperial Japanese Army. The Battle of Iwo Jima was arguably the most famous Marine engagement of the war with high losses of 26,000 American casualties and 22,000 Japanese. By the end of WWII, the Corps expanded totaling about 485,000 Marines. Nearly 87,000 Marines were casualties during World War II (including nearly 20,000 killed), and 82 were awarded the Medal of Honor. The Korean War saw the Corps expand from 75,000 regulars to a force of 261,000 Marines, mostly reservists. 30,544 Marines were killed or wounded during the war. During Vietnam War Marines evacuated Saigon. Vietnam was the longest war for Marines. By its end, 13,091 had been killed in action, 51,392 had been wounded. Marines participated in the failed 1980 Iran hostage rescue attempt, the invasion of Grenada, the invasion of Panama. On 23 October 1983, the Marine headquarters building in Beirut, Lebanon, was bombed, causing the highest peacetime losses to the Corps in its history. 220 Marines and 21 other service members were killed. Marines liberated Kuwait during the Persian Gulf War, participated in combat operations in Somalia (1992–1995), and took part in the evacuation of American citizens from the US Embassy in Tirana, Albania. Following the attacks on 11 September 2001, Marine Corps, alongside the other military services, has engaged in global operations around the world in support of War on Terror. Marines were among first sent to Afghanistan in November 2001. Since then, Marine battalions and squadrons have been engaging Taliban and Al-Qaeda forces. U.S. Marines also served in the Iraq War.