The site http://flyers.arcade-museum.com has you covered with thousands of print ads, flyers, decals and manual for arcade games. Here are a few samples of manuals for classic arcade games. I love these one-pagers, because they are to the point and usually not only explain how the game works, but also are presented in a way that gets you hyped for playing it, using colorful illustrations.
For more browse http://flyers.arcade-museum.com or check out my related pinterest board here:https://de.pinterest.com/anjinanhut/game-design-manuals/
Gestureworks provides frameworks for gesture controls on games, devices and interactive installations. They also created a huge set of complex gesture illustrations, ideal for game design documents, manuals or clear communication about complex control patterns.
You can get the illustrations and vector shapes here (creative commons license): http://gestureworks.com/icons-fonts
They also granted dafont.com the opportunity to host a dingbats font with all the gestures with a completely free to use license here: http://www.dafont.com/gesture-glyphs.font?l=10&l=1 …handy!