Swaggerty Blockhouse
... that tree ring analysis of Swaggerty Blockhouse's logs indicate a cutting date circa 1860, well after the posted construction date for this nationally-recognized historic structure?
... that <a href="./Dendrochronology" id="mwFpQ" rel="mw:WikiLink" title="Dendrochronology">tree ring analysis</a> of <b id="mwFpU"><a href="./Swaggerty_Blockhouse" id="mwFpY" rel="mw:WikiLink" title="Swaggerty Blockhouse">Swaggerty Blockhouse</a></b><span about="#mwt68" class="nowrap" data-mw="{&quot;parts&quot;:[{&quot;template&quot;:{&quot;target&quot;:{&quot;wt&quot;:&quot;'s&quot;,&quot;href&quot;:&quot;./Template:'s&quot;},&quot;params&quot;:{},&quot;i&quot;:0}}]}" id="mwFpc" style="padding-left:0.1em;" typeof="mw:Transclusion"><span typeof="mw:Entity">'</span>s</span> <a href="./Lumber" id="mwFpg" rel="mw:WikiLink" title="Lumber">logs</a> indicate a <a href="./Logging" id="mwFpk" rel="mw:WikiLink" title="Logging">cutting</a> date circa 1860, well after the posted construction date for this <a href="./National_Register_of_Historic_Places" id="mwFpo" rel="mw:WikiLink" title="National Register of Historic Places">nationally-recognized</a> historic structure?