Topographic map of any national park???????

I’m doing a project where I need a topographic map of any national park. Can anyone find a free, online topographical map of any US national park?

Actually, there is a place to get free topo maps. Your taxes at work, hooray! It’s a Google Maps interface, so you can just click on the map to zoom in on your area, leave markers on places of interest, etc.

Then you look for the GeoPDF link, where it will let you download a high-resolution 1:24,000 topo map absolutely free of charge.

http://store.usgs.gov/b2c_usgs/usgs/maplocator/(xcm=r3standardpitrex_prd&layout=6_1_61_48_2&uiarea=2&ctype=itemDetails&carea=$ROOT)/.do

Also, if you do some searching, you will find an extension for Google Earth that will layer USGS topos. It’s slow to load as you scroll around, but well worth it.