Pinkerton Detective Agency Bill for $442.22, 1910

This is a paid bill from Pinkerton Detective Agency too Goldfield Mines Co concerning investigative services they performed in 1910 concerining the theft or ore. This bill and report was isssued out of the Pinkerton San Francisco office. $442.22 might seem like very little money but it was not in those days. The average salary of a middle class American was $ 750.00 a year. So then, this $442.22 bill was more that what an average person made in half a year.