Magic Markers

When were maghic markers invented? Did they exist in the late 1950’s-early 1960’s? And, when did they become common household items? - Jinx

Source: http://inventors.about.com/library/inventors/blpen.htm

Magic Markers sound so innocent and harmless, but your question reminded me of news articles I read years ago about the Magic Marker factory closing down in Trenton.
A little poking around turned up this article:

Totally unrelated, I read further in the article and saw this:

The kicker is, my best friend lives on Lalor Street, in one of those very row homes :eek:. Next time I stop by for pizza and a movie I’ll have to share this with him.