By M. Scott Morris Daily Journal TUPELO – Historical Heroes, a group of Tupelo High School students, need help putting on their “Yart Sale.” The event will be 2 p.m. Saturday, April 15, at Oren Dunn City Museum at Ballard Park. Harry Collins will auction off donated artwork, and the proceeds will provide art supplies and a pizza party for kids from Haven Acres Boys & Girls Club in Tupelo. “Our senior project is based at the Oren Dunn museum,” said Zander Foster, 18.