Silvia Secchi, left, and author Royal C. Gardner discuss Gardner’s book “Waters of the United States” during the Iowa City Book Festival Oct. 9, 2025 at Prairie Lights book store in downtown Iowa City, Iowa. Julia Hansen/Iowa City Press-Citizen

People gather to listen to author Royal C. Gardner talk about his book “Waters of the United States” during the Iowa City Book Festival Oct. 9, 2025 at Prairie Lights book store in downtown Iowa City, Iowa. Julia Hansen/Iowa City Press-Citizen

People browse paper products during the Guild of Book Workers Showcase & Market during the Iowa City Book Festival Oct. 9, 2025 in downtown Iowa City, Iowa. Julia Hansen/Iowa City Press-Citizen

Steve Van Der Woude looks at a Red Maple from Waldon Pond, a connection to Henry David Thoreau, Oct. 9, 2025 at

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