A good source of information on vintage handheld electronic games is the Electronic Handheld Game Museum (<a rel="nofollow" class="external text" href="http://handheldmuseum.com/">Handheldmuseum.com</a>).
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://www.flickr.com/people/51764518@N02/">Joe Haupt</a> from St. Paul, Minnesota
CC BY-SA 2.0
<a href="//commons.wikimedia.org/wiki/Flickr" class="mw-redirect" title="Flickr">Flickr</a>: <a rel="nofollow" class="external text" href="https://secure.flickr.com/photos/51764518@N02/14113715537/">Vintage Mattel Electronics Auto Race Handheld Game, No. 9879, Red LED, Made In Hong Kong, Copyright 1976</a>