Students discover how to estimate the age of redwood trees. They measure the trees' diameters by using string to calculate the circumferences. Students conclude by discussing the science of dendrochronolgy.

Share in the campfire stories of the people who defined Texas. Read about free people of color, and how the Republic of Texas was between a rock and a hard place.

George Catlin made extensive observations on the various native peoples that he encountered on his travels in the West. He recorded his experiences in letters and notes. These documents provide us with critical information on the culture...