Here ate the latest Charlestown - Navy Yard neighborhood notes:

Navy Yard, then and now

In honor of Boston Preservation Month, the Boston Landmarks Commission will welcome Dan Gagnon of the National Park Service in a free lecture, “Charlestown Navy Yard: Then and Now,” at 1 p.m. on Saturday, May 12 at the Charlestown Navy Yard, 114 16th St.

Gagnon will explore how this historic area has adapted to the changing needs of the community, from the landing site of the British Army during the Battle of Bunker Hill, then as a naval facility building warships for the navy, to its current mixed-use area with a hospital, residences and the National Park Service.

Call 617-242-5688 or email Dan_Gagnon@nps.gov for more information.

Celebrating historic Charlestown

The Charlestown Preservation Society will host a celebration of historic Charlestown from 10:30 a.m. to 2 p.m. and 6 to 10 p.m. on Saturday, May 12 at Memorial Hall, 14 Green St.

The family day will be held from 10:30 a.m. to 2 pm. with CPS Mobile Historic Neighborhood walking tours followed by a $5 barbecue lunch.

A fundraiser to benefit the Memorial Hall Building Renovation Fund will be held in the evening. All funds raised will be matched by a private grant from the George B. Henderson Foundation. Tickets are $35 in advance or $45 at the door.

Registration for both events is recommended, at www.charlestownpreservation.org.

Auction fundraiser

The Charlestown Nursery School will host its annual auction, “A Wonderful Night,” at 7 p.m. on Saturday, May 12 in the Seasons Ballroom at the Bostonian Boston Hotel, 26 North St.

The biggest fundraiser of the year, this year’s auction is crucial for funding the core programs of the school that serves Charlestown and the greater Boston community

Visit www.charlestownnurseryschool.org or call 617-242-5159 for further details and to purchase tickets.

Chocolate lecture

“Naughty But Not,” a chocolate lecture and sampler, will be held from 6:30 to 7:30 p.m. on Monday, May 14 at the Charlestown Branch Library, 179 Main St.

Andi Wolfgang, founder of NuFudge, will share where chocolate comes from and how it can be included in diets in healthy ways. She will explain how she started her company and bring samples of her organic fudge as well as recipes attendees can try out at home.

Call 617-242-1248 for further details.

Open house

The USS Constitution Museum, Building 12, Charlestown Navy Yard, will host the Boarding Party and Collections Open House from 6 to 8 p.m. on Wednesday, May 16.

The museum will celebrate the many stories of individuality and expression told by the significant portrait collection. Captured by the artist’s brushstrokes or the photographer’s eye, portraits are snapshots that reveal identity and attitudes, preserving a unique personality for all time. Attendees will meet face-to-face with the men and women whose legacies of service and courage define “Old Ironsides.”

The evening will also include sea-worthy libations from Privateer Rum and delicious appetizers. Attendees can vote for their favorite rum concoction as three local bartenders compete to take home top honors in the Privateer Rum Challenge.

Tickets are $50 for members and $60 for non-members.

To purchase tickets and for more information, call 617-426-1812 or visit www.ussconstitutionmuseum.org.

Chamber night out

The community is invited to the May Chamber Night Out from 5:30 to 7 p.m. on Wednesday, May 16 at Charlestown Tea and Treats, 1 Monument Ave.

Charlestown Chamber of Commerce hosts free monthly networking events that encourage members to attend and bring others. Attendees will meet their fellow business owners, leaders and neighbors to discuss how to make Charlestown stronger over food and wine.

Visit www.charlestownmachamber.org for further information.

Constitution tour

The USS Constitution Museum, Building 22, Charlestown Navy Yard, will offer a tour of the Naval History and Heritage Command Detachment from 10:30 to 11:30 a.m. on Thursday, May 17 as part of Boston Preservation Month activities.

Visitors will get a sneak peek of on-going preservation work for USS Constitution with a behind-the-scenes tour of the Naval History and Heritage Command Detachment’s restoration facility in the Charlestown Navy Yard. Historian Margherita Desy will present a one-hour tour of the 1847 Alexander Parris-designed carpenters’ and riggers’ shops.

This tour requires participants to be able to climb steep and long flights of stairs in the building. It is not recommended for children younger than age 10. Closed-toe shoes are a must.

Reservations are required as space is limited.

Further information can be found at www.ussconstitutionmuseum.org or by calling 617-426-1812.

Basics of tea

The Charlestown Branch Library, 179 Main St., will host “Tea Basics” with MEM Tea Imports from 6: 30 to 7:30 p.m. on Thursday, May 17.

The audience will look at the wide world of tea, steep themselves in tea history, learn about the different varieties of tea and find out how tea is processed and prepared. The evening will end with a tea tasting.

Reservations are required as space is limited, by calling 617-242-1248 or by email to kkire@bpl.og.

British Army in Boston

The National Park Service will host a lecture, “Meet the New Neighbors: The British Army in Boston,” from 7 to 8 p.m. on Thursday, May 17 in the education room of the Bunker Hill Museum, 43 Monument Square.

In October 1768, British regiments arrived in Boston to reassert control over an increasing disloyal colony. Author John Bell will explore what the locals and soldiers made of each other and the escalating social tensions that resulted in the Patriots call to arms and the War of Independence.

Admission is free and refreshments will be served.

Call 617-242-4198 or send an email to info@charlestownpreservation.org for more details.

Navy Yard cleanup

Volunteers are needed to lend a hand and help clean up the Navy Yard as part of the annual “Love Your Block” (formerly Boston Shines) neighborhood cleanup at 9 a.m. on Saturday, May 19. Participants will meet at the entrance to Flagship Wharf on Eighth Street in the Navy Yard.

Supplies and cleaning materials will be provided and refreshments will be served. Friends of the Charlestown Navy Yard and the City of Boston are sponsoring this event.

Send an email to Angie at info@friendscny.org to register to volunteer or for more information.

Summer concert

The Friends of City Square Park and the Charlestown Cooperative Bank will host a free summer concert from 5:30 to 7 p.m. on Wednesday, May 23 at City Square Park, Market Square.

The Charlestown Boys and Girls Club Performers and the Charlestown High School Band will entertain in a family-friendly program. There will also be face painting, a sketch artist and free popcorn.

Blankets, low beach chairs and picnics are welcome. Admission is free.

Visit www.citysquarepark.org for more information.

Cooks of St. John

The many wonderful cooks of St. John’s Episcopal Church have created a cookbook filled with 85 pages of imaginative and delicious recipes, everything from haute cuisine to play dough. It will make a special present for Mother’s Day, Father’s Day, showers, weddings, birthdays and graduations.

“The Cooks of St. John: A Slice of Parish Life” sells for $15. It is available for sale on Sundays between 11 a.m. and noon at the church rectory, 27 Devens St., or it can be ordered from the church by calling 617-242-1272.

Mutinous expedition

The USS Constitution Museum, Building 22, Charlestown Navy Yard, is offering a new program “Mutinous Expedition: A Quest Based on Honest Truth” now through Aug. 31.

Children can relive the story of Jack Tarr, an ordinary seaman aboard USS Constitution, and his struggle to decide whether to join a mutinous crew or stay loyal to Captain Bainbridge. They can explore the galleries to find hidden clues to help inform their decision.

Quest kits are available in the museum lobby.

Further information can be found at www.ussconstitutionmuseum.org or by calling 617-426-1812.

‘Old Ironsides’ summer hours

USS Constitution and its crew are on their summer hours of operation. Constitution, the oldest commissioned warship afloat, will be open to the general public, free of charge on Wednesday through Sunday from 10 a.m. to 6 p.m.

The ship is also open on Tuesdays from 10 a.m. to 6 p.m.

Each tour, self-paced, takes visitors through the ship’s top two decks. Every 30 minutes one of the active duty sailors who are stationed onboard “Old Ironsides”, will give a verbal reenactment of her storied past and answer questions about both the history of the Navy and present day Navy.

To board USS Constitution, all visitors, ages 18 and older, must show a valid state or federal-issued photo I.D. or passport.

After the tour, visitors are encouraged to explore the USS Constitution Museum, located adjacent to Dry Dock 1, for more opportunities to interact with Constitution sailors, learn more of the ship’s history and experience several new restoration-themed exhibits. Entrance is free; donations are encouraged.

For more news and information, visit www.navy.mil/local/constitution or call 617-242-7511.

Marine museum

The Boston Marine Society at Building No. 32, Charlestown Navy Yard, is open to the public from 9 a.m. to 4 p.m. on Mondays through Fridays.

The society hosts a large collection of art and artifacts depicting maritime history and life on the sea, as well as a research library, detailing the history of sailing and marine commerce and the history of one of the oldest and most important ports in the country.

Its website includes selected objects from its collection and the history of the organization. Visit www.bostonmarinesociety.org or call 617-242-0522 for more information.

Diorama display

The Bunker Hill Monument Museum, 45 Monument Square, is open daily from 9 a.m. to 5 p.m. Located on the Freedom Trail, the museum displays the history of the construction of the Bunker Hill Monument as well as a diorama of the historic battle. A cyclorama shows a 360-degree view of the battlefield.

The Charlestown Historical Society keeps its archives in this building, which once served as the neighborhood’s public library.