The first officially surveyed map of Tucson was used to incorporate it as a village in 1871 and as a city — the first in the Arizona Territory — in 1877. The city encompassed two square miles, much of ...

Find out what's up in your night sky during April 2026 and how to see it in this Space.com stargazing guide. When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

[1] Human origins. (3 sheets) 1945.--[2] The spread of the food producing economy in the old world. 1945.--[3] Regional differences in old-world. 1945.--[4] Important sites in the range of the ...

Chichén Itzá, "the mouth of the well of the Itzás," was likely the most important city in the Yucatán from the 10th to the 12th centuries. Evidence indicates that the site was first settled as early ...