Allen's 1885 Map of the Valdez Glacier Route Based on Lt. Abercrombie's Report
Note that this map shows Valdez Glacier to be an east/west running glacier. In fact, the glacier runs north/south as shown on Schrader's1899 map. Lt. Abercrombie probably never crossed Valdez Glacier but instead relied upon second-hand reports. The discrepancy in the 1885 map, the only map the 1898 gold rushers had, caused great confusion among the prospectors.
Valdes (Valdez) Glacier Trail to Klutina Lake
Note that the Valdez Glacier runs north/south. Lt. Abercrombie
may have ascended Corbin Glacier in 1884, but no lake is visible from either
Corbin or Valdez Glacier's summits.
Klutina Lake (Lake Abercrombie) to Copper Center, Copper
River and Cordova
Note that the route through Keystone Canyon which became
the Military Pack Train Trail or Valdez Trail in 1899 and was upgraded to
a wagon road between 1905-1909 is marked as a "probable route"
on this map. Today, the Richardson Highway and Alyeska Pipeline follow this
route. It was the first land-based route on American territory to Alaska's
interior and the only road to the interior until 1942.