A Fired Employee Made Millions From the Mistake That Cost Her Job
There was a time when fixing a typing mistake did not involve tapping a backspace key. Office workers relied on electric typewriters that increased speed but made corrections difficult. Carbon-film ribbons left dark marks that would smear when erased, and a single misplaced letter could mean retyping an entire page.
In that setting, a Dallas executive secretary with uneven typing skills came up with a solution that would help. Bette Nesmith Graham tested her idea at work, refined it at home, and eventually built a company she later sold for $47.5 million.
Established a Career Before Building a Product
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Bette Clair McMurry left high school as a teenager and married Warren Nesmith at nineteen. She later earned her GED through night classes while working. After divorcing in 1946, she raised her son, Michael, as a single mother. By 1951, she worked as an executive secretary to the chairman at Texas Bank & Trust in Dallas. Her supervisors valued her determination and promoted her.
Electric Typewriters Made Mistakes Costly
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Offices adopted electric typewriters during the 1950s to increase efficiency. These machines used carbon-film ribbons that transferred ink cleanly, but any attempts to erase left visible damage or smudges. At this point, the secretary understood that errors wasted time and paper. She wanted a correction method that preserved the document without forcing a complete restart.
A Simple Observation Led to a Breakthrough
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One winter day, Graham watched artists paint a holiday display on bank windows. She noticed how they corrected errors by brushing matching paint directly over unwanted marks. The paint covered the flaw and restored the surface. That approach made her realize that the same technique could apply to typing errors.
She Turned Her Kitchen into a Lab
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Back at home, Graham mixed white, water-based tempera paint in her kitchen blender and adjusted the tint to match her office stationery. The mixture went into a small jar that she took to work, along with a watercolor brush. At her desk, she covered the incorrect letter with a thin layer of paint whenever a typographical error appeared. After allowing the spot to dry briefly, she typed the correct character over it.
Mistake Out Gained Attention
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She called her early formula “Mistake Out” and shared it with fellow secretaries. Word spread quickly within the office, and colleagues asked for their own bottles after seeing how clean the corrections looked. The secretary began preparing small batches at home. She filled nail polish bottles and attached simple labels. Demand increased beyond her workplace, and she started selling to local office supply dealers.
Refined the Formula
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Since Graham wanted a product that worked consistently across different papers and inks, she consulted her son’s chemistry teacher and received guidance from a paint manufacturer. Research at the public library helped refine the tempera formula, and repeated testing in her kitchen improved texture and drying time. An industrial polymer chemist later contributed technical insight that strengthened the mixture’s reliability.
Trade Mentions and Major Orders Boosted Sales
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A mention in an office trade magazine drew national attention to her correction fluid. General Electric placed a large early order for several hundred bottles in multiple colors. She had earlier approached IBM with comparison samples that showed her product’s performance compared to traditional erasing methods. IBM declined to market it at first, but then became one of her customers as interest expanded.
A Typing Error Cost Her the Bank Job
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Throughout this time, the single mother managed both her bank position and her growing company for years. That balance ended after she repeatedly used company time and resources for her side business, including signing a bank document with her product’s name on official stationery and typing it in internal correspondence. Management dismissed her, which allowed her to focus solely on developing and marketing her formula.
Liquid Paper Became a Global Business
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She renamed the product Liquid Paper and secured a trademark and patent protection. Production expanded rapidly during the late 1960s. It is believed that her output reached 10,000 bottles per day in 1968, and sales climbed to one million bottles that same year. By the mid-1970s, factories produced 25 million bottles annually.
Sold the Company and Secured Her Legacy
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After marrying Robert Graham in 1962, the business entered a new phase of expansion. He used his sales experience to promote Liquid Paper to office supply stores across the country and helped increase national distribution. The marriage ended in 1975, and disputes over control of the company followed. Graham retained majority ownership and defended her position. In 1979, she sold Liquid Paper to the Gillette Corporation for $47.5 million.