Creola Katherine Coleman was born on Aug. 26, 1918, in White Sulphur Springs, W.Va., the youngest of four children of Joshua and Joylette (Lowe) Coleman. Her mother was a schoolteacher, her father a farmer.
From her earliest childhood Katherine counted things: the number of dishes in the cupboard, the number of steps on the way to church and, as insurmountable a task as it might pose for one old enough to be daunted, the number of stars in the sky.
“I couldn’t wait to get to high school to take algebra and geometry,” Mrs. Johnson told The Associated Press in 1999.