AKCHO was incorporated in 1977 as a forum available to all who work in the world of heritage preservation, guided and nurtured by now experienced old hands. AKCHO aspires to foster cooperation between various historical and heritage organizations for mutual benefit, to establish and promote minimum standards for the aforementioned organizations, to promote public access to historical resources, and to promote public policy that is beneficial towards the preservation of King County history and heritage.

The site offers information about Association projects and advocacy, as well as resources for researchers and historical advocates.

TheWhiteHouse.com provides a wealth of information on the current administration, ranging from recent press releases to the stance of the administration on various important issues such as defense and health care. The site functions as an informational site about the current administration rather than the White House itself.

The site offers all news, press releases, executive orders and proclamations issued by the current administration. In addition, the site has information about the history of the presidential office, virtual tours and tour information about the White House itself, links to Federal Statistics, and the current administration's stance on a variety of issues.

The Society's Museum displays artifacts used by people here on the Island to illustrate the changes in lifestyles through the years. There are more than 3,000 artifacts on display in dioramas, showcases, and freestanding exhibits. Among them is a display describing the life of Dr. Dixy Lee Ray, former Governor; the largest collection of pulley blocks in the State; and several antique gasoline engines in working order.

The Society offers tours, educational programs, and occasional recreational and educational events; the museum offers exhibits.

The Park is a 200-acre, day-use heritage park in south central Washington on the Yakama Indian Nation Reservation. The park is primarily an interpretive effort, telling the story of mid-19th-century army life and providing insights into the lifeways of local Native American culture. Located in the foothills of the Cascade Mountains in an old oak grove watered by natural springs, Fort Simcoe was an 1850s-era military installation established to keep peace between the settlers and the Indians. Due to its historic significance, the park was placed on the National Register of Historic Places in June, 1974. Before the fort era, the site was an Indian campground where many trails crossed. Five original buildings are still standing at the fort: the commander's house, three captain's houses and a blockhouse. Various other buildings have been recreated to appear original. Houses are filled with period furnishings.

The park offers exhibits, tours, and occasional recreational and educational events.

The Society maintains a Museum and the Rothschild House. The Museum, housed in the restored 1892 Port Townsend City Hall building's former municipal court room, fire hall and jail spaces, presents exhibits illustrating the lively history of local communities born in waterfront forests over 150 years ago. The 1868 Rothschild House invites visitors to step back to the 1800s; it is virtually unchanged from a hundred years ago.

The society offers research library access, tours, educational programs, lectures, and occasional recreational and educational events; the museum offers exhibits; the house offers exhibits and tours.

The Society operates a museum housed in a 1939 Coast Guard Lifeboat Station. Exhibits in the main building explore the Coast Guard on the South Beach, cranberry growing, life on the edge of the ocean, whales and whaling, and lighthouses.

The society offers occasional recreational and educational events; the museum offers exhibits and tours.

The Museum displays exhibits in the turn-of-the-century Snoqualmie Depot, incorporating displays interpreting the purpose and function of a train station with outdoor displays of restored railway equipment. It also operates an Interpretive Railway Program called the Snoqualmie Valley Railroad. This five-mile common carrier railroad allows museum visitors to experience a train excursion aboard antique railroad coaches through the Upper Snoqualmie Valley.

The museum offers exhibits, train rides, educational programs, research library access, and occasional recreational and educational events

Historic Ritzville maintains two museums. The Burroughs Home was the residence of Ritzville's pioneer physician, Dr. Frank R. Burroughs. It has been restored to its original condition and its collection highlights clothing and household items from the 1890s to the 1920s. The Depot features commercial artifacts relevant to Ritzville around the turn of the century. These include the town's original horse-drawn hearse and a working telegraph machine.

The Society operates a museum which offers exhibits on local history.

The society and museum offer exhibits, tours, educational programs, lectures, and occasional recreational and educational events.

The Center presents interpretative exhibits covering the entire history of the Columbia Gorge, from prehistory to the present day, including First Peoples, the Lewis and Clark Expedition, forts and settlements in the area, timber and fishing industries, transportation up and down the river, and other historical topics.

The center offers a short film, exhibits, and educational programs.