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Mark Trela Photography: Stop off the trial
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Mark Trela Photography: Before Sunset - Chicago River
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Mark Trela Photography: Surly Cross Check
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Mark Trela Photography: Potawatomi state park
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Mark Trela Photography: Sturgeon Bay - Oregon Bridge
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Mark Trela Photography: Industria
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Mark Trela Photography: John Muir Trail - Connector, Kettle Moraine
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Mark Trela Photography: John Muir Trail, Kettle Moraine
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Mark Trela Photography: Strong Steel Hand Made in the USA
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Mark Trela Photography: Bluff Road, WI