Playthings Magazine September 1979.
These pages are from a trade magazine for toy manufacturers and retailers called Playthings. These magazines will cover things like market trends, hotest toys/licences at the time, etc. I've included every page I found anything pretaining to handheld games including advertisements, articles about handhelds or companies that make them, or articles that talk about the market trends of electronic games. I've tried to scan or photograph each page so you can read the entire articles if you are interested in it.
Click the page you want to view.