It is estimated that the retail sales volume of Pittsburgh’s department stores has increased approximately 35%, since 1920—a sure indicator that Pittsburgh’s economic strength is in the ascendency. Pittsburgh’s retail stores sell each year an average of approximately $481 worth of goods for each resident of Alle- gheny County, which county represents the steel city’s trad- ing area. In Philadelphia County, the corresponding per capita sales amount to $419 or $12 less than in Pittsburgh. On the same basis, sales in the trading areas centering at other industrial communities of the state are as follows: Reading $376, Altoona $344, Erie $292, Wilkes-Barre $247 and Scran- ton $229. The Harrisburg area equals Pittsburgh in sales with a per capita of $431, but this is the only community in the state which even approaches Pittsburgh. Consumer buying power measures the well being finan- cially of the great mass of residents of any community. Pittsburgh’s leadership indicates that the average family of this city is able to afford more comforts and luxuries than its counterpart in other large cities.