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October 29, 2025 • 27 mins

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How are the new technologies and tools shaping the future of agencies? How can you create an agency that outlasts trends? When you've been around for 75 years in the ad world, you've seen it all, from Mad Men, media buying by fax, the rise of the internet, and now, AI. Today's featured guest runs an agency that has been doing full-service marketing since 1950. What's impressive isn't just their longevity but also how they've stayed relevant and human in a business that changes faster than a TikTok trend.

Jennifer Spire is the CEO of Preston Spire, an independent Minneapolis-based creative agency that's been helping brands grow with full-service marketing since 1950. She's the agency's fourth CEO, starting in small independent agencies, rising through global holding companies, and bringing both worlds' lessons to how she leads today. That mix of experiences shaped her leadership style grounded in independence, driven by creativity, and fiercely protective of agency culture.

In this episode, we'll discuss:

  • Building a culture that lasts seven decades and beyond.

  • Why independence still matters in the agency world.

  • The future of agency talent and AI.

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Sponsors and Resources

E2M Solutions: Today's episode of the Smart Agency Masterclass is sponsored by E2M Solutions, a web design, and development agency that has provided white-label services for the past 10 years to agencies all over the world. Check out e2msolutions.com/smartagency and get 10% off for the first three months of service.

How One Agency Has Stayed Relevant for 75 Years

Preston Spire started as a design shop in 1950 and quickly grew to a full service advertising agency, which differs from what we think of as full service today. Over the decades, it's evolved continuously, reinventing itself with every shift in marketing.

Jennifer says the real secret to their longevity is adaptability. "It's really hard to continue to evolve and stay strong, but I think there's a lot to be said for an agency that can evolve and still grow while being relevant."

Now they're 25 years away from a century, which is both impressive and humbling, as well as something they want to highlight more. Surprisingly, some advisors hav

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