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Cambridge Main Library celebrates pride with the Grumpytime Club! The Grumpytime Club’s original music for children and their caregivers is creative, positive, thoughtful, beautifully crafted, and catchy as cake! Led by award-winning singer songwriter Carrie Ferguson, the Grumpytime Club creates live shows that are often jubilant sing-along dance parties, highlighting themes of inclusivity, social justice, Earth stewardship and LGBTQ youth/family JOY! Party in the Curious George Room with families of all ages, and join CPL in showing your pride!

In this class, Cambridge Public Library staff will teach you how to look for books, films, and other resources available in the catalog. We will review how to perform basic and advanced searches, learn how to log in to your account with your library card, and better understand all of the formats and locations available in the catalog. Attendees should be comfortable using the computer and navigating the Internet independently, but no prior knowledge of the catalog is needed. Registration is required.

Activities include family fun and games with live wildlife, truck climb-aboards, arts and crafts, water treatment plant open house, walks around Fresh Pond, live music, and more. Kids can become a junior ranger and all can learn about sustainability resources.

June selection: The Vanishing Act of Esme Lennox by Maggie O'Farrell Reading Interests: We read mostly contemporary Fiction and Non-Fiction, with forays into older works and classics. Past selections include: Wellness by Nathan Hill, Sing, Unburied, Sing by Jesmyn Ward, The Elements of Marie Curie by Dava Sobel, and The Midnight Library by Matt Haig. How to get the print book: Copies of the book are set aside at the O'Connell Branch. Click here for O'Connell Branch Hours How to get the e-book or digital audiobook: This month’s book is available as a digital audio and e-book through Libby or Hoopla. This book group meets in person at the O'Connell Branch. No registration is needed. Drop-ins welcome. For more information contact the branch at 617-349-4019.

On June 9 from 4:30 to 6:00 PM, CDOT will host a drop-in project open house in front of the Whitehead Institute for the 2026 Main Street Safety Improvement Project.

A three-part webinar series designed to invest in your health, wellness, and longevity. Take fear and uncertainty out of the future by being prepared for changes in health. This session will cover topics and tips related to preparing for sudden changes and what you can do to minimize the impact of illness, such as advanced directives, emergency planning, and communication. This event will be held online. A Zoom link will be sent to registrants one hour before the session begins.

The Cambridge Police Department, Middlesex District Attorney's Office, and Massachusetts State Police Detectives assigned to the Middlesex District Attorney's Office have launched an active investigation into the circumstances surrounding the discovery of a deceased individual with an apparent gunshot near the intersection of Broadway & Norfolk Street. Anyone with information on this incident is asked to contact the Cambridge Police Department at (617) 349-3300. Anonymous tips can be shared with the Cambridge Police Department through phone, text or e-mail.

Join us for a lively discussion of a great book in person at the Main Library! Snacks will be provided. For ages 7-10 and a parent or caregiver. This month's book is Dogtown by Katherine Applegate and Gennifer Choldenko. In Dogtown, a shelter for unwanted canine and robot dogs, an extraordinary bond develops between Chance, a longing three-legged dog, Metalhead, an empathetic robot, and Mouse, their friendly ally, as they strive to find forever homes. Copies of this month's book are available at the Children's Desk. Copies of this month's book are available at the Children's Desk. Both caregiver and child should read the book before the discussion to participate. Registration is required — only one registration is needed per family. For questions about parent/child book group, please email Rachel: rbeaton@cambridgema.gov

Join us for a lively discussion of a great book in person at the Main Library! Snacks will be provided. For ages 7-10 and a parent or caregiver. This month's book is Garlic and the Vampire, by Bree Paulsen. Garlic is perfectly happy living in her little vegetable community with her best friend Carrot and the Witch Agnes to take care of them. But when a vampire moves into the big spooky castle on the hill, everyone agrees Garlic is the only one who can go confront him! Copies of this month's book are available at the Children's Desk. Both caregiver and child should read the book before the discussion to participate. Registration is required — only one registration is needed per family. For questions about parent/child book group, please email Rachel: rbeaton@cambridgema.gov

Join us to celebrate Jasmine Warga's A Rover's Story, which tells the story of a rover's journey to Mars and the challenges it faces there. We will celebrate by building some artful mechanisms with Playful Engineers! Use simple machines to create mechanical automata and solve problems similar to those faced by rovers on Mars - using materials you could find around your own home. Registration is required. This event is part of a special series promoting our 2026 Curious George Lecture (CGL) with Jasmine Warga, award-winning author of A Rover's Story, Other Words for Home, and many other popular children's books. Save the Date: the Lecture will take place on Wednesday, April 15, 6 p.m. at the Main Library. Funding is generously provided by the Cambridge Public Library Foundation.