Walter Berkowitz, son of William Berkowitz, discovers a new, high-speed envelope-folding machine produced by Winkler & Dunnebier (W&D). Berkley Machinery Company was later established and Tension becomes the sole supplier of W&D machinery in the United States. The machine’s introduction revolutionizes the American envelope industry.
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Bridge Conference 2026: What Nonprofit and Direct Mail Marketers Need to Know
Get a brief recap of major takeaways from the Bridge Conference 2026.
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