National Christmas Tree
... that the first U.S. National Christmas Tree was lit up by President Calvin Coolidge on Christmas Eve in 1923?
... that the first <a href="./United_States" id="mwAv0" rel="mw:WikiLink" title="United States">U.S.</a> <b id="mwAv4"><a href="./National_Christmas_Tree_(United_States)" id="mwAv8" rel="mw:WikiLink" title="National Christmas Tree (United States)">National Christmas Tree</a></b> <i id="mwAwA">(pictured)</i> was lit up by President <a href="./Calvin_Coolidge" id="mwAwE" rel="mw:WikiLink" title="Calvin Coolidge">Calvin Coolidge</a> on <a href="./Christmas_Eve" id="mwAwI" rel="mw:WikiLink" title="Christmas Eve">Christmas Eve</a> in <a href="./1923" id="mwAwM" rel="mw:WikiLink" title="1923">1923</a>?