10. M100, E300s, E400s - Astrological Underpinnings (Math, Astronomy)

Chart Calculations

M100: Chart Mechanics – Enid Newberg
Fowks, Lauren and Lynn Sellon. 2006. Simply Math. ISBN-13: 978-1724355843. (Amazon paper: $39.95)
Midnight Ephemeris for the 20th Century. Find one that has declinations if possible. You can also use the electronic ephemeris from Astrodienst
Book of Tables. Examples use the Michelsen Book of Tables, but any book of tables for Placidus House system is ok. (Amazon.com or astrologers.com) or use electronic version on Astrodienst