What was the average yearly income in 1915?

What were Blackfoot Indians hunting groups called? What year was the first US cent made? Who designed the bicentennial quarter? Was Wilma Rodolph married? What is the weight of a gold one dollar coin from 185? What are the characteristics of Isagani in el filibusterismo? What is the meaning of the phrase the black planet? Codes for Jesse James death race? How much is the 1976 April 13 2 dollar bill? What is value of 1971 uncirculated eisenhower dollar? Who was Francis J Bellamy? What was the emancation proclamation? What is the value of 1776-1976 S Bicentennial penny? How can you change rules that are unfair? Why are pilgrims called religious separatists? Who was a teacher in Mississippi before she became a famous journalist? American financial costs and casualties compared to the costs and casualties borne by the other allies? How much is a 1864 Seated Liberty dime worth? Is there anything similar to Nintendo? How did world war 2 the cold war and civil war unrest shape the American century?