Lee Stickler's blog made me wonder: when did washable markers come out? I don't remember if the markers I used as child were washable or not, although judging from what I've found they probably were not. What I could find browsing the internet seems to indicate that Crayola introduced washable markers in 1987 and washable crayons in 1991 or 92. Here are the links if anybody is interested:
Binney & Smith History - document
Interactive Timeline
Condensed Timeline - pdf
6 years ago
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