From boys and girls all over the U.S. the scrawled letters poured in, some peremptory, some urgentall rather vague. "Dear Pittsburgh Chamber of Commerce," wrote one boy from Reno. "We are reading about coal. Could you send some pamphlets and a piece of coal." A pupil in El Dorado, Ark. asked for "pictures and postcards." He did not say what sort of pictures or of what, but he did provide one pertinent bit of information: "I am in Mrs. Jackson's room." Said a brief note from Southwick, Mass.: "Will you send me all the information about your state."
"Information." To the Pittsburgh...