COAST GUARD OPEN HOUSE. Explore a polar ice breaker ship and learn about Coast Guard missions, 9 to 11 a.m. May 28 and 29 at Aloha Tower. Free. 535-3230.
BILL'S BOOKMOBILE, Friends of the Library of Hawaii year-round bookstore's monthly sale, 10 a.m. to 2 p.m. at 690 Pohukaina St., Kaka'ako. Specials: hobby, cooking, gardening, health, travel and children's books. Also, paperback fiction and romance novels. 536-4174.
SOLAR OPEN HOUSES, 10 a.m. May 29 at Wilhelmina Rise and June 6 at Mililani Mauka. View and learn about solar water heating systems. Watch installation. Free. Call 748-8888 or visit www.RevoluSun.com.
"HISTORIC BITES: GIFTS OF THE ALI'I," lecture by Bob Sigall, director of Small Business Hawai'i and marketing teacher, noon at Chamberlain House Kitchen, Mission Houses Museum. Free. Bring lunch. 261-0705.
"THE PEACE CORPS TODAY," meet Peace Corps alumni, staff, local applicants and nominees as the corps approaches its 50th anniversary; 5:30 to 7 p.m. at Nu'uanu YMCA, third floor boardroom; free. Register: firstname.lastname@example.org or 510-452-8442 (Nathan Hale Sargent).