Share on Facebook Follow on Facebook Add to Google+ Connect on Linked in Subscribe by Email Print This Post A detailed account of Henry T. Allen’s exploration can be read here. 1885, 29th, Alaska, allen, august, chitina, copper, explration, general, henry, history, koyukuk, lt, rivers, unalakleet, yukonAugust 29th, 1885 added by Alaska Native News on Aug 29, 2021View all posts by Alaska Native News →Share this:TwitterFacebookRelated Articles: