A sketch map of Western Russia at the time of Napoleon's invasion in 1812. "The disastrous campaign which opened in June, 1812, was conducted on so vast a scale that a brief sketch can provide only the slightest conception of the...

A map of North America in 1840 at the time when the concept of "Manifest Destiny" was being applied to annex the Oregon Territory, Texas, and much of northern Mexico into the United States. The map is color-coded to show the extent of...

The English cloak, though commonly adopted as the translation of these terms, conveys no accurate conception of the form, material, or use of that which they denoted. The article designated by them was always a rectangular piece of...

An outer garment. The English cloak, though commonly adopted as the translation of these terms, conveys no accurate conception of the form, material, or use of that which they denoted. The article designated by them was always a...

The American Geological Institute has done a great job defining and explaining evolution in this online booklet. Darwin, fossils, natural selection, and change over time are some of the concepts that are covered. Make sure to see the...

The American Geological Institute has done a great job defining and explaining evolution in this online booklet. Darwin, fossils, natural selection, and change over time are some of the concepts that are covered. Make sure to see the...