1. Robert Richardson's Thoreau Lecture & Book Signing, "October, or Autumnal Tints:" Scholar Robert Richardson will give a talk on Concord's favorite son, author and naturalist Henry David Thoreau, on Tuesday, Oct. 9th at 7:30 pm at First Parish in Concord, 20 Lexington Road. It's to celebrate publication of an illustrated edition of Thoreau's essay, "October, or Autumnal Tints," with a biographical Introduction by Richardson. A reception and book signing will follow. Free and open to the public. Info: 978-369-9602
2. Public Meetings Posted for Today: According to the town website, public meetings posted for today include the Hugh Cargill Trust at 9:15 a.m. the Council on Aging at 5:30 p.m., the Concord Public School Committee at 6:30 p.m. and the Library Committee at 7 p.m.
3. Clay Monsters at Barefoot Books: For $25, children ages 5 and older create their own spooky monsters at a Barefoot Books clay workshop, led by artist and craftsperson Sarah Brow-Hill. It's from 2 to 3:20 p.m.
5. Cloudy with a Chance... Of Rain: Patchy fog and clouds are in the forecast, with a good chance of rain and a high of 56, according to the National Weather Service, which predicts more possible rain overnight with a low of 45.