Book excerpt: This amazing volume has a wealth of information for the astrological researcher, teacher and student. A wide variety of tables are provided for varied time periods from 501 BC through AD 2100 to facilitate ease in correlating history with planetary patterns. An explanatory article by prominent astrologers precedes each table; each designed to give tips on how to use the tabular information, with examples from astrological practice and tradition. In one section, author/programmer Neil F. Michelsen, originator of the best-selling American Ephemeris series, displays mandalas constructed from calculations of orbital patterns. These striking figures are both interesting (the Venus-Earth mandala forms a heart!) and inspirational, demonstrating the beauty of the design of our Universe.