The dapper man in the bow tie is Harvey Crane. He’s talking about his camshafts and valvetrain components to dealers in the Crane Engineering Company booth at the very first SEMA Show (though it wasn’t called that at the time).
In January 1967, some 100 aftermarket companies set up booths in the concrete aisles of Dodger Stadium’s Club Level for what was then called just “the trade show.” Crane, one of SEMA’s earliest members, brought his wares from his company’s headquarters in Hallandale, Florida, and demonstrated them using a “hand-operated engine simulator,” according to a story in Petersen Publishing Company’s Hot Rod Industry News.

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Tips for Aftermarket Suppliers and Retailers Before Gearing Up for e-Commerce
Getting products in front of potential customers is the lifeblood of marketing. Whether through straightforward advertising placed in pertinent outlets or through creative ventures handled by public relations (PR) agencies, getting the word out is key.
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