It's time to sharpen your knowledge of pencil history! (Bet you can't guess what the first erasers were made of.) ...

Almanac: The pencil and eraser And now a page from our "Sunday Morning" Almanac: March 30th, 1858, 156 years ago today . . . the day a Philadelphia inventor made his mark.

Fans of the pencil metaphor can pick up the eraser-equipped Pencil by 53 from $50 – $60 for use in Paper and a small list of other apps, while Adonit’s $50 Jot Dash provides a nifty writing ...