Lawrenceville leads the way

From the Census gnomes.  On this day in history:

"Profile America -- Wednesday, February 23rd.  On this date in 1954, children at the Arsenal Elementary School in Pittsburgh, Pennsylvania took part in a vital medical test.  The youngsters were inoculated against polio -- a scourge that had crippled many children and adults, too, such as Franklin D. Roosevelt.  The vaccine was developed with the backing of the March of Dimes by Dr. Jonas Salk, head of the virus research lab at the University of Pittsburgh.  Its effect was immediate, greatly reducing the number of cases in just a few years.  Now in the U.S., the incidence of new polio cases is rare, as 95 percent of children have been inoculated against the disease.  You can find these and more facts about America from the U.S. Census Bureau, online at http://www.census.gov/.