<a class="mw-redirect" href="https://en.wikipedia.org/wiki/Old_Faithful_Geyser" id="mwoA" rel="mw:WikiLink" title="Old Faithful Geyser">Old Faithful Geyser</a> is observed and named by <a href="https://en.wikipedia.org/wiki/Henry_D._Washburn" id="mwoQ" rel="mw:WikiLink" title="Henry D. Washburn">Henry D. Washburn</a>.