Online via Zoom

Online Lecture, “Cotton’s Ocean: Castine and the Antebellum Cotton Trade," 7 p.m. Sponsored by Castine Historical Society. Speaker is author Stephen J. Hornsby. Pre-registration required. www.castinehistoricalsociety.org.

Webinar on dehydrating and freezing for food preservation, 6-7:30 p.m. Sponsored by University of Maine Cooperative Extension. 834-3905 or [email protected]

Online Film Screening, "Votes for Women, The History of Women’s Suffrage Through Song," 7 p.m., Sponsored by Jesup Memorial Library. 288-4245.

Online Author Talk, 7 p.m. Sponsored by Blue Hill Public Library. Hannah Burr will speak about her book "Contemporary Prayers to Whatever Works." 374-5515 or [email protected]

Online Lunch & Learn Program, "Atlantic Salmon in Maine: Yesterday, Today and Tomorrow," 12:30-1:30 p.m. Sponsored by Maine Center for Coastal Fisheries. https://coastalfisheries.org/events/.

Colloquy Downeast Online Discussion, "The Pre-Raphaelite Art Movement,” 4-6 p.m. Held via Zoom. www.colloquydowneast.org.

Online Discussion, “Confronting the Challenge of Affordable Housing on MDI,” 5:30 p.m. Sponsored by Southwest Harbor Public Library. 244-7065 or [email protected]

Webinar, "Developing Sugarbush Leases," 7-8:30 p.m. Sponsored by University of Maine Cooperative Extension and Land for Good. Registration required. 781-6099 or [email protected]

Online Art Talk, 5-6 p.m. Sponsored by Courthouse Gallery Fine Art. Talk is on the gallery's exhibit “Master Effect: Jon Imber and Linda Packard." 667-6611 or [email protected]

Online Talk on apple cider vinegar, 7 p.m. Sponsored by Jesup Memorial Library. Speakers are organic apple grower Bob Sewall and his wife, Mia Mantello. 288-4245.

Colloquy Downeast Online Discussion, "The Pre-Raphaelite Art Movement,” 4-6 p.m. Held via Zoom. www.colloquydowneast.org.

Online Author Talk, 7 p.m.. Sponsored by Ellsworth Public Library. Speaker is John Leland, author of "Happiness is a Choice You Make." 667-6363.

Virtual Museum Trip, "Hilma af Klint at the Guggenheim," 10 a.m. Sponsored by Schoodic Arts for All. 963-2569 or [email protected]

Ellsworth Public Library Tuesday Readers Meeting, 2 p.m. Held online via Zoom. "Can't We Talk About Something More Pleasant?" by Roz Chast will be discussed. 667-6363.

Online Program, “Mindfulness of Body and Breathing Fundamentals," 5-6 p.m. Sponsored by Healthy Acadia. Led by Dr. Joshua Ehrlich. [email protected]

Ellsworth Public Library Book-a-Month Club Online Meeting, 6 p.m. Group will discuss "The Book of Two Ways" by Jodi Picoult. [email protected] or 667-6363.

Webinar, "Growing Great Garlic in Maine," 6-7:30 p.m. Sponsored by University of Maine Cooperative Extension. 781-6099 or [email protected]

Colloquy Downeast Online Discussion, "The Pre-Raphaelite Art Movement,” 4-6 p.m. Held via Zoom. www.colloquydowneast.org.

Online Talk, The Role of Local Solutions in Addressing Climate Change, MDI as a Leader," 1:30 p.m. Sponsored by Bar Harbor Garden Club. Speaker is Johannah Blackman of A Climate to Thrive. 460-8496 or [email protected]

Online Class, "Getting Your Affairs in Order," 6-7:30 p.m. Part of the Ellsworth Public Library's NEA Big Read event series. https://ellsworth.maineadulted.org/course/getting-your-affairs-in-order/.

Online Author Talk, 7 p.m. Sponsored by Jesup Memorial Library. Susan Inches will discuss her book "Advocating for the Environment." 288-4245.

Colloquy Downeast Online Discussion, "The Pre-Raphaelite Art Movement,” 4-6 p.m. Held via Zoom. www.colloquydowneast.org.

Maine Mystery Book Discussion Group Meeting, 1-2 p.m. Held online via Zoom. Sponsored by Ellsworth Public Library. "Slipknot" by Linda Greenlaw will be discussed. 667-6363 or [email protected]

Online MDI Science Cafe, "The Warming Sea," 5 p.m. Sponsored by MDI Biological Laboratory. https://mdibl.org/event/mdi-science-cafe-2021-10-18/.

Online Class, "Getting Your Affairs in Order," 6-7:30 p.m. Part of the Ellsworth Public Library's NEA Big Read event series. https://ellsworth.maineadulted.org/course/getting-your-affairs-in-order/.

Online Author Talk, 7 p.m. Sponsored by Jesup Memorial Library. Thomas Urquhart will discuss his book "Up for Grabs: Timber Pirates, Lumber Barons and the Battles Over Maine's Public Lands." 288-4245.

Online Author Talk, 7 p.m. Sponsored by Ellsworth Public Library. Roz Chast will discuss her book "Can't We Talk About Something More Pleasant?" 667-6363 or www.ellsworthlibrary.net/bigread.

Online MDI Science Cafe, "OCEARCH’s North Atlantic White Shark Study," 5 p.m. Sponsored by MDI Biological Laboratory. https://mdibl.org/event/mdi-science-cafe-2021-10-25/.

Online Author Talk, 7 p.m. Sponsored by Jesup Memorial Library. Bob Keyes will discuss his book "The Isolation Artist: Scandal, Deception, and the Last Days of Robert Indiana." 288-4245.

Ellsworth Public Library Book-a-Month Club Online Meeting, 6 p.m. Group will discuss "Milkman" by Anna Burns. [email protected] or 667-6363.

Virtual Museum Trip, "Hilma af Klint at the Guggenheim," 10 a.m. Sponsored by Schoodic Arts for All. 963-2569 or [email protected]

Online Author Talk, 7 p.m. Sponsored by Jesup Memorial Library. Elizabeth Miller will discuss her book "Heritage Skills for Contemporary Life: Seasons at the Parris House." 288-4245.

Maine Mystery Book Discussion Group Meeting, 1-2 p.m. Held online via Zoom. Sponsored by Ellsworth Public Library. "Deadline" by Gerry Boyle will be discussed. 667-6363 or [email protected]