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South Lake Union in Seattle in King County, Washington — The American West (Northwest)
 

Work — At Work on Lake Union

 
 
At Work on Lake Union Marker - Side 1 image. Click for full size.
Photographed by Douglass Halvorsen, August 22, 2024
1. At Work on Lake Union Marker - Side 1
Inscription. Side 1
Logging and Sawmills
Henry Yesler’s sawmill on Elliott Bay was Seattle’s first industry, and much Lake Union timber was harvested for Yesler’s mill. In 1854, John Ross built a short-lived sawmill on Lake Union’s far northwest shore. The Western Mill opened in 1882, here on the lake’s southwestern shore. For nearly a century afterward, rafts of logs were towed across Lake Washington and through the Montlake Cut to mills on Lake Union.

Captions
(Photo #1) In 1909, Seattle’s Brace and Herbert Mill dominated the industrial shore of south Lake Union.
(Photo #2) Here, a tug pulled a raft of logs through Lake Union in 1955.


Side 2
“In the 1920s, when I was a boy, I used to ride the streetcar down the west side of Lake Union. We passed the ovens of the Seattle Brick Company, where the bricks were being made for paving and building. When the furnace doors swung open, you could see men shoving pallets of new clay bricks in the glowing red furnaces.

And then at South Lake Union, we passed a screaming sawmill. The logs came up out of the water, slowly, towed up a ramp by a steam-powered endless belt, and they’d come into the headsaw. We’d see the first cut, and then they went inside to the bandsaws, and we couldn’t see
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them any more. It was sure noisy, I want to tell you.” —Tom Sandry

Side 3
Building Planes and Trucks
The Boeing Airplane Company had its innovative start on Lake Union, where William Boeing tested experimental biplanes, housing them in a boathouse at the foot Roanoke Street. In the decades that followed, Ford automobiles and Kenworth trucks were built in factories on Lake Union.

Captions
(Photo #1) On June 15, 1916, the little Boeing seaplane made its first successful flight over Lake Union. Here, workers hauled the plane into its lakeshore hangar, adapted from a boathouse.
(Photo #2) Mechanics at south Lake Union’s Kenworth Motor Truck Company worked on a bus in 1934, during the Great Depression.


Side 4
Inventing the Future
From 1860 to the present, the opportunities afforded by Lake Union have fostered innovative industries: brickyards and sawmills, tanneries and cooperages, asphalt plants, the Ford Assembly Plant, the PACCAR/Kenworth Plant, canneries and ship chandleries. Today, Lake Union is a biotechnology, research and technology hub, including ZymoGenetics, the Fred Hutchinson Cancer Research Center and the Seattle Biomedical Research Institute.

Captions
(Photo #1) Housed in the former Seattle City Light
At Work on Lake Union Marker - Side 2 image. Click for full size.
Photographed by Douglass Halvorsen, August 22, 2024
2. At Work on Lake Union Marker - Side 2
steam plant, ZymoGenetics has become one of the largest biotechnology companies in Washington State.
(Photo #2) The Fred Hutchinson Cancer Research Center opened the first building of its Lake Union campus in 1993 and supports a roster of internationally acclaimed scientists including Nobel Prize winners.

 
Erected by MOHAI (Museum of History & Industry).
 
Topics. This historical marker is listed in these topic lists: Air & SpaceIndustry & CommerceWaterways & Vessels.
 
Location. 47° 37.572′ N, 122° 20.225′ W. Marker is in Seattle, Washington, in King County. It is in South Lake Union. It is on Valley Street. Touch for map. Marker is at or near this postal address: 1000 Valley St, Seattle WA 98109, United States of America. Touch for directions.

Regionally, this marker is in Washington’s Puget Sound Region. It is also on the American Pacific Coast, in the Pacific Northwest, and in the Lewis & Clark Corridor. Globally, it is in North America, in the Cascade Range, in the Inside Passage, on the Ring of Fire, in the Pacific Rim, in the Western Hemisphere, in the Western World, and in the Anglosphere.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Lake — A Lake at the Heart of the City (a few steps from this marker); Play — Having Fun on the Lake (within shouting distance of this marker); Paths — The Union of Pathways (within shouting distance of this marker); Native — This Indian Lake (within shouting distance of this marker); Pocock Shells (about 300 feet away, measured in a direct line); U.S. Naval Reserve Armory
At Work on Lake Union Marker - Side 3 image. Click for full size.
Photographed by Douglass Halvorsen, August 22, 2024
3. At Work on Lake Union Marker - Side 3
(about 500 feet away); Seattle Fire Department bell (about 500 feet away); Millstone (about 500 feet away). Touch for a list and map of all markers in Seattle.
 
At Work on Lake Union Marker - Side 4 image. Click for full size.
Photographed by Douglass Halvorsen, August 22, 2024
4. At Work on Lake Union Marker - Side 4
At Work on Lake Union Marker image. Click for full size.
Photographed by Douglass Halvorsen, August 22, 2024
5. At Work on Lake Union Marker
At Work on Lake Union Marker image. Click for full size.
Photographed by Douglass Halvorsen, August 22, 2024
6. At Work on Lake Union Marker
 
 
Credits. This page was last revised on February 16, 2025. It was originally submitted on February 10, 2025, by Douglass Halvorsen of Klamath Falls, Oregon. This page has been viewed 129 times since then and 9 times this year. Last updated on February 16, 2025, by Douglass Halvorsen of Klamath Falls, Oregon. Photos:   1, 2, 3, 4, 5, 6. submitted on February 10, 2025, by Douglass Halvorsen of Klamath Falls, Oregon. • J. Makali Bruton was the editor who published this page.
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Jul. 3, 2026