Bibliophilia on Twitter: "#OnThisDay in 1858, the wood-cased pencil with attached rubber eraser, was patented by Hyman L Lipman of Philadelphia http://t.co/SGGEX0Atqo" / Twitter
Almanac: Pencil with attached eraser - CBS News
Staedtler Noris Pencils with Eraser Tips, HB - Pack of 12 | Pencils | YPO
Who Made That Built-In Eraser? - The New York Times
Pencil With Rainbow Eraser | Paper Tiger
Pencil With Attached Eraser Icon. Flat Design With Shadow. Stock Vector | Royalty-Free | FreeImages
STAEDTLER - 1pcs Natural Pencil 2B with attached Eraser in back | Best – Adriti's Home