Paul Galdone will have the nation's children reciting all the old favorites yet. (His last was The Deacon's Masterpiece.) Now he has disinterred Barbara Frietchie, who stuck her 90 year old gray head out the window and invited invading Stonewall Jackson to take a potshot at it for hanging out her Union flag. Naturally, Stonewall Jackson, (who died on that magnificent last line --""Let us cross the river and rest in the shade,"") -- replied with, ""'Who touches a hair of yon gray head/ Dies like a dog! March on!' he said."" Some days a girl just can't get herself shot. Good old Barbara. She's been well coiffed here and the poem has been well served by the illustrator.