Alaska topo map for Magellan Meridian Gold?

I have a Magellan Meridian Gold with plenty of SD card memory. I also have
MapSend Topo 3D USA which, in contrast to the lower 48 states, shows NO topo
info for Alaska.

Does anyone know where I might obtain topo maps for Alaska that can be
downloaded (uploaded?) into the Merigold? Or, alternatively, is there a way
I can convert Alaska topo maps from another source (USGS, etc.) into a form
that can be placed on the SD card and displayed in the Merigold?

Dwynn

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L. Dwynn Lafleur
Professor of Physics
University of Louisiana at Lafayette
lafleur@louisiana.edu
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