This is a personal (and partial) list, arranged only alphabetically.  It is no accident that many of these titles hail from the 1970s:  it was a period of astrological renaissance; and not at all coincidentally I began learning astrology at that time.  There are many other fine tomes out there; but these have been and continue to be MY inspiration.
Busteed, Marilyn; Tiffany, Richard; and Wergin, Dorothy, Phases of the Moon: A Guide to Evolving Human Nature, Shambhala: Berkeley. 1974

Carter, Charles E.O., The Principles of Astrology, 1925

Carter, Charles E.O., An Introduction to Political Astrology, 1951

Davison, Ronald, Synastry: Understanding Human Relations through Astrology, ASI Publications: New York.  1978

Dodson, Carolyn R., Horoscopes of the US States & Cities, ACS: Pelham. 1975

George, Demetra, and Bloch, Douglas, Asteroid Goddesses: The Mythology, Psychology, and Astrology of the Re-Emerging Feminine, 2003

Goodman, Linda, Sun Signs, Mass Market Paperbacks: 1985 (originally published 1968)

Green, Jeff, Pluto: The Evolutionary Journey of the Soul, Llewellyn: St. Paul.  1985

Greene, Liz, Saturn: A New Look at an Old Devil, Weiser: New York. 1976

Hand, Robert, Planets in Composite: Analyzing Human Relationships, Para Research: Rockport.  1975

Hand, Robert, Planets in Transit: Life Cycles for Living, Para Research:  West Chester.  1976

Hone, Margaret E., Applied Astrology: A Companion to The Modern Textbook of Astrology, Fowler: London.  1974

Hone, Margaret, E., The Modern Textbook of Astrology, Fowler: London.  1973

Jansky, Robert Carl, Interpreting the Eclipses, ACS: San Diego.  1979

Jansky, Robert Carl, Astrology Nutrition & Health, Para Research: West Chester.  1977

Michelsen, Neil F., The American Ephemeris for the 20th Century 1900 to 2000 at Midnight (Revised Edition), ACS: San Diego.  1988

Michelsen, Neil F., and Pottenger, Rique, The American Ephemeris for the 21st Century 2001 to 2050 at Midnight (Revised Second Edition), ACS: San Diego.  1992

Michelsen, Neil F., and Potenger, Rique, The Asteroid Ephemeris 1900 to 2050, Including Chiron and the Black Moon Lilith, ACS: San Diego.  1999

Parker, Derek, and Parker, Julia, The Compleat Astrologer, McGraw-Hill: New York. 1971

Penfield, Marc, Bon Voyage: An Astrological Study of Relocation, AFA: Tempe.  1992

Reinhart, Melanie, Chiron and the Healing Journey, Penguin: London.  1998

Rudhyar, Dane, An Astrological Mandala: The Cycle of Transformations and its 360 Degrees, Vintage: New York. 1974

Rudhyar, Dane, The Astrology of America’s Destiny, Random House: New York. 1974

Rudhyar, Dane, The Astrology of Personality: A Reformulation of Astrological Concepts and Ideals, in Terms of Contemporary Psychology and Philosophy, Lucis: New York. 1936

Rudhyar, Dane, The Practice of Astrology as a Technique in
Human Understanding
, Penguin Books: New York. 1970

Sakoian, Frances, and Acker, Louis, The Astrologer’s Handbook, Harper & Row: New York.  1973

Shea, Mary Fortier, Planets in Solar Returns: Yearly Cycles of Transformation and Growth (Revised Edition) Twin Stars: Clinton.  1998