"Engineering News-Record", as a service to its readers, compiles and publishes an extensive amount of data on building material prices and construction labor costs. Each month it publishes prices for 67 different building materials, in each of 20 major U.S. cities. The first weekly issue each month contains a table of cement, ready-mix concrete, and aggregate (crushed stone) prices, the second weekly issue contains a table of pipe prices, the third issue contains lumber, plywood, drywall, and insulation prices, and the fourth issue contains steel and other metal product prices.