I'd check this out if I were there

"Sheltering with Thoreau: A Conversation with David Gessner"| Concord, MA Patch

https://patch.com/massachusetts/concord/calendar/event/20210810/1122980/sheltering-with-thoreau-a-conversation-with-david-gessner

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"The Thoreau I didn’t know" - The Boston Globe

https://www.bostonglobe.com/2021/07/07/magazine/thoreau-i-didnt-know/