<p>On verso of image: City Hall, accepted by County Commissioners, May 26, 1882</p>
<ul><li>Subjects (LCTGM): City Hall (Seattle, Wash.); City &amp; town halls--Washington (State)--Seattle; Police stations--Washington (State)--Seattle; Seattle (Wash.). Police Dept.--Facilities; Men--Washington (State)--Seattle; Street railroad tracks--Washington (State)--Seattle</li>
<li>Subjects (LCSH): Third Avenue (Seattle, Wash.); Jefferson Street (Seattle, Wash.); Central business districts--Washington (State)--Seattle</li></ul><hr>
University of Washington Libraries originally said circa 1882 <div style="display: none;">date QS:P,+1882-00-00T00:00:00Z/9,P1480,Q5727902</div>, but this is almost certainly in the 1900s, and they have retitled per research here.
<p>Compare the following:
</p>
<ul class="gallery mw-gallery-traditional"><li class="gallerybox" style="width: 155px"><div style="width: 155px">
			<div class="thumb" style="width: 150px;"><div style="margin:31.5px auto;"><a href="//commons.wikimedia.org/wiki/File:Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St,_ca_1901-1903_(SEATTLE_3949).jpg" class="image" title="1901"><img alt="1901" src="https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St%2C_ca_1901-1903_%28SEATTLE_3949%29.jpg/120px-Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St%2C_ca_1901-1903_%28SEATTLE_3949%29.jpg" decoding="async" width="120" height="87" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St%2C_ca_1901-1903_%28SEATTLE_3949%29.jpg/180px-Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St%2C_ca_1901-1903_%28SEATTLE_3949%29.jpg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/c/cb/Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St%2C_ca_1901-1903_%28SEATTLE_3949%29.jpg/240px-Seattle_City_Hall_at_the_corner_of_3rd_Ave_and_Jefferson_St%2C_ca_1901-1903_%28SEATTLE_3949%29.jpg 2x" data-file-width="768" data-file-height="558"></a></div></div>
			<div class="gallerytext">
<p>1901
</p>
			</div>
		</div></li>
		<li class="gallerybox" style="width: 155px"><div style="width: 155px">
			<div class="thumb" style="width: 150px;"><div style="margin:20.5px auto;"><a href="//commons.wikimedia.org/wiki/File:Seattle_City_Hall,_1905_(CURTIS_2089).jpeg" class="image" title="1905"><img alt="1905" src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Seattle_City_Hall%2C_1905_%28CURTIS_2089%29.jpeg/120px-Seattle_City_Hall%2C_1905_%28CURTIS_2089%29.jpeg" decoding="async" width="120" height="109" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Seattle_City_Hall%2C_1905_%28CURTIS_2089%29.jpeg/180px-Seattle_City_Hall%2C_1905_%28CURTIS_2089%29.jpeg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/f/f5/Seattle_City_Hall%2C_1905_%28CURTIS_2089%29.jpeg/240px-Seattle_City_Hall%2C_1905_%28CURTIS_2089%29.jpeg 2x" data-file-width="3916" data-file-height="3567"></a></div></div>
			<div class="gallerytext">
<p>1905
</p>
			</div>
		</div></li>
		<li class="gallerybox" style="width: 155px"><div style="width: 155px">
			<div class="thumb" style="width: 150px;"><div style="margin:27.5px auto;"><a href="//commons.wikimedia.org/wiki/File:Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall,_Seattle,_April_1906_(WARNER_384).jpeg" class="image" title="1906"><img alt="1906" src="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall%2C_Seattle%2C_April_1906_%28WARNER_384%29.jpeg/120px-Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall%2C_Seattle%2C_April_1906_%28WARNER_384%29.jpeg" decoding="async" width="120" height="95" srcset="https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall%2C_Seattle%2C_April_1906_%28WARNER_384%29.jpeg/180px-Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall%2C_Seattle%2C_April_1906_%28WARNER_384%29.jpeg 1.5x, https://upload.wikimedia.org/wikipedia/commons/thumb/a/a5/Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall%2C_Seattle%2C_April_1906_%28WARNER_384%29.jpeg/240px-Jefferson_St_looking_northeast_from_2nd_Ave_and_Yesler_Way_showing_the_Court_House_and_City_Hall%2C_Seattle%2C_April_1906_%28WARNER_384%29.jpeg 2x" data-file-width="640" data-file-height="507"></a></div></div>
			<div class="gallerytext">
<p>1906
</p>
			</div>
		</div></li>
</ul>
So that extension to the right (south) dates from between 1903 and 1905.
<div class="fn value">
Unknown author<span style="display: none;">Unknown author</span></div>
<a rel="nofollow" class="external text" href="http://content.lib.washington.edu/seattleweb/index.html">Seattle Photographs</a>