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Wrangell-St. Elias National Park is locate in the south east corner of Alaska just above the panhandle.The PDF map (see link below) shows a lot of detail of Wrangell-St. Elias National Park but it is a fairly large file and may take a while to download.The town of McCarthy lies in the heart of the park and is accessible by teh McCarthy road from Chitina Alaska.
Download PDF map (1 MB)
Another map available at Amazon is the National Geographic map of the entire park. This is a great map for studying the entire park and good to have on a trek to identify peaks that lay beyond the borders of you USGS quads.
A required map for travel in Alaska is the Alaska Gazetteer which is available at bookstores and many service stations. You could pick one up in Anchorage or order a copy online at Amazon.com.