Pencil Drawing Portrait

Thomas Edison had his pencils specially made by Eagle Pencil. Each pencil was three inches long, was thicker than standard pencils and had softer graphite than was normally available.
Vladimir Nabokov rewrote everything he had ever published, usually several times, by pencil.
John Steinbeck was an obsessive pencil user and is said to have used as many as 60 a day. His novel East of Eden took more than 300 pencils to write.
Vincent van Gogh only used Faber pencils as they were "superior to Carpenters pencils, a capital black and most agreeable".