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Everyone who's ever stamped their Passport knows that the official park cancellation is much more than ink on a page. Each stamp captures the ... more info

The Night Sky is widely recognized by the amateur astronomy and educational communities as the overall best planisphere on the market. Unlike ... more info

The Night Sky is widely recognized by the amateur astronomy and educational communities as the overall best planisphere on the market. Unlike ... more info

Very limited quantity at 2019 price!  Will be $12.95 Sunscreen. Check. Bug spray. Check. And don’t forget your personal roadmap to ... more info

Written and illustrated by David Allen Sibley. The Sibley Guide to Birds has quickly become the new standard of excellence in bird identification ... more info

Geology of Texas Map Page-sized color map and text, scale: 1 inch = 100 miles, reprinted 2004. Texas Bureau of Economic Geology.

The classic little science book series you remember from your childhood, updated for new generations! Geology by Frank H. Rhodes.This informative ... more info

The classic little science book series you remember from your childhood, updated for new generations! Fossils by Frank T. Rhodes, Herbert S. Zim and ... more info

How to Die in the Outdoors: From Bad Bears to Toxic Toads, 110 Grisly Ways to Croak by Buck Tilton, M.S. By living a normal, boring life, you have an ... more info

By Herbert S. Zim and Robert H. Baker; Revised and updated by Mark R. Chartrand. Enjoy the wonders of the heavens and understand more fully what ... more info