Grabbit - History of Highlighter A highlighter is a felt tip writing device filled with transparent fluorescent ink. The first highlighter was invented by Dr. Frank Honn in 1963 and produced by
Compound Interest: The Chemistry of Highlighter Colours
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History of Highlighters – Who Invented Highlighter?
The Hand-Held Highlighter - The New York Times
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Who Invented Promotional Highlighters?
When Were Highlighters Invented?
Ed Artifact — Brightening the school year: The history of the highlighter - Graduate School of Education - University at Buffalo
How the highlighter pen became a million dollar idea - BBC News
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History of Highlighters – Who Invented Highlighter?