The Under-Standing of Eclipses 2016
Get ready for the American eclipse of August 21, 2017!Paperback– August 21, 2016
The Astronomical Companion
Guide to astronomy, rich in 3-D diagrams.This is a NEW EDITION of the book first published in 1979 and reprinted 18 times
The Thousand-Yard Model or, The Earth as a Peppercorn
Walking the solar system. "Another 95 paces to Jupiter..."!
American Indian Map, and Navajo Map
Poster-size map and table of language families of North America; and map of the Navajo tribal area, with names in Navajo.