A pencil sharpener sits in an empty cabinet in the classroom of Denisse Broussard at Benjamin Banneker Elementary School on May 23, 2014, in New Orleans. (Edmund D. Fountain for The Washington ...

Almanac: The pencil and eraser 02:05. And now a page from our "Sunday Morning" Almanac: March 30th, 1858, 156 years ago today . . . the day a Philadelphia inventor made his mark.

Mr. Pen pencil sharpener & eraser set includes four pieces, each providing a two-in-one convenience with a sharpener for precise pencil tips and a cap-covered eraser for clean corrections.

I have already started giving away some of my collection of pencil sharpeners. There are some that are either really valuable or hold a lot of nostalgic appeal for me at this point.