Sketchpad - Wikidata

1963 computer program written by Ivan Sutherland

Ivan Sutherland - Wikipedia

Refining logos of Wikimedia Projects — a Brand Exercise, by Nirzar Pangarkar, Down the Rabbit Hole

Monica S. Lam's research works Stanford University, CA (SU) and other places

Head of the river god Arno (Roman Sketchbook) - Wikidata

Modelling with constraints: theoretical foundation and application

File:Bohnenstengel, A. (2003) Bayern 02 Seite 04 und 05.jpg - Wikimedia Commons

Art Academy: Home Studio, Ultimate Pop Culture Wiki

VKC The Flemish Art Collection

File:Tesla Easter Egg Sketch Pad.jpg - Wikimedia Commons

Seated Woman (page from a sketchbook)

Seated Woman in Profile (page from a sketchbook)

Sketchbook - Wikidata