Where Cars Meet Culture
Mar 16, 2025
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Smog Check 1975

7 years ago
1 min read

by  Michael Satterfield

Photojournalist Lyntha Scott Eiler spent a day at an Auto Emission Inspection Station in Downtown Cincinnati, Ohio in the August of 1975. It was the first year that Carbon Monoxide and Hydrocarbon emissions testing was required for all light-duty gasoline powered motor vehicles in Hamilton County.

From motorists with dirty hands, indicating they had just been working on their vehicle prior to testing, to a young woman proudly showing off her “I’m Clean” bumper sticker, Eiler captured a moment in automotive and environmental history in her photos. Enjoy them below.

Prior to this series she was involved in Project Documerica, a project funded by the EPA to record the state of the environment prior to major air and water legislation. You can learn more about her work HERE.

Source: The U.S. National Archives

Michael Satterfield

Michael Satterfield, founder of The Gentleman Racer, is a storyteller, adventurer, and automotive expert whose work blends cars, travel, and culture. As a member of The Explorers Club, he brings a spirit of discovery to his work, whether uncovering forgotten racing history or embarking on global expeditions. His site has become a go-to destination for car enthusiasts and style aficionados, known for its compelling storytelling and unique perspective. A Texan with a passion for classic cars and motorsports, Michael is also a hands-on restorer, currently working on a 1960s SCCA-spec Formula Super Vee and other project cars. As the head of the Satterfield Group, he consults on branding and marketing for top automotive and lifestyle brands, bringing his deep industry knowledge to every project.

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