Watt trying to improve Newcomen engine

Newcomen steam engine

Newcomen engine

US troops on Biak 1944

Leprechaun on World

Papilio machaon Old World Swallowtail front view

antiaircraft fire on Okinawa

USS SHAW exploding Pearl Harbor 12 07 1941

Omaha Beach 1944

Iwo Jima WWII

virus world space

USA Patriotism Poster WWII 2

Atomic Cloud Over Nagasaki 1945

flag raising on Iwo Jima

Churchhill Roosavelt Stalin at Yalta

World map 2012

Battle of Mortain 1944

Manila 1945

D Day

World topo SRTM

American howitzers bomb German positions

World War I silhouette

Atom bomb

Shinto Shrine in Atomic Ruins Nagasaki 1945