What was the average yearly income in 1915?

What is the value of a 1910 Liberty gold coin? Why did Booth's original plan to kidnap Lincoln fail? Were the people of lake villages hunters and gathers or were they farmers? What is a group of people forming a community? Which rights did the document drawn at the meeting in Philadelphia in 1774 include? What are unique baby names from the southern US? Were black babies used as foot warmers before the Civil what? What states are considered in the south? Did slavery take place in the Harlem Renaissance? What are three most repulsive events that went on in the Forced Labor article? What areas of the United States did Lewis and Clark explore? Why was the penny different in 1943? Value of 100 dollars today compared to 1857? Why was the new nations capitol built as a new city in the south? How many stars on the US Flag 1861? How did the south finance the civil war? What did the American anti-slavery society do? What were the 3 main southern seaports that were blockaded during the civil war? What is the value of an 1836 US dime? 1969 Kennedy silver 50 cent piece worth?