On April 4, 1820, the brig Thaddeus landed in Kona with the first company of American Protestant missionaries to the Islands. To mark this 190th anniversary, and to introduce its new director, Tom Woods, Mission Houses Museum and the Hawaiian Mission Children's Society will host a series of events Friday and Saturday.

Activities include casual get-togethers with Woods, a field trip to Pearl Harbor, special orientation sessions of the Hawaiian Mission Children's Society Library, a lecture by historic architect Spencer Leineweber, a Rain Gutter Regatta, photo taking in historic costumes, and other family activities.

On Friday's schedule:

8:30-9:30 a.m. — breakfast with Woods and Lia Dwight. Meet Woods, the new director of the museum, and Lia Dwight, president of the Hawaiian Mission Children's Society. Bagels, eggs, croissants, coffee and special teas can be purchased from the Mission Houses Museum Café. Meal reservations requested.

9:30 a.m. and 4 p.m. — library orientation sessions. Learn about the historical resources available in the Hawaiian Mission Children's Society Library. Admission is free, but space is limited; reservations required.

10 a.m. — tours of the USS Bowfin Submarine Museum and the Battleship USS Missouri Memorial. Join museum senior curator Elizabeth Nosek for these docent tours. Admission is $25 for adults, $15 for children. Prepaid reservations required. Afterwars, explore the Pacific Aviation Museum on your own (additional fees). Meet at the USS Arizona Memorial Visitor Center.

11 a.m., 1 p.m. and 2:45 pm — historic houses tours. Admission is free.

6-8 p.m. — welcome dinner. Enjoy a casual buffet dinner with Woods. Prices are $20 for adults, $5 for children. Prepaid reservations required.

On Saturday's schedule:

9:30-11:30 a.m. — Hawaiian Mission Children's Society annual meeting. Celebrating the 190th anniversary of the arrival of the Thaddeus, missionary descendants and museum supporters gather to hear the latest about the museum and library. Roll call and annual photo at 11 a.m.

11:30 a.m.-12:30 p.m. — buffet lunch. Teriyaki or kalua chicken, brown rice, green salad, or vegetarian wrap, plus ice tea or lemonade. Hot dogs, apples and lemonade for children. Prices are $10 for adults, $5 for children. Reservations required.

noon-3 p.m. — Pioneer Day: Ships & Trips, a public open house. Challenge others in the Rain Gutter Regatta (boats made on site, kits $4), take photos in historic costumes, pack a trunk for a 19th century sea voyage, try out hands-on activity packs, explore the Frame House and see the printing press in action. Admission is free. No host snacks and drinks, including a coffee bar, will be available in the museum café.

1:30-2:30 p.m. — special lecture by historic architect Spencer Leineweber: "First Contacts: Making a House a Home." Hawaiian Mission Children's Library Reading Room. Admission is free. No reservations required. But space is limited, so come early.

To request an informational flyer with registration information, contact Mary Ann Lentz at 447-3922 or mlentz@missionhouses.org; or Ally McKay at 447-3920. To download a registration form, go to www.missionhouses.org.