How to Read the Ephemeris by Jeff Mayo
The Astrologer's Handbook Series No. 2.
"When one considers that the ephemeris (for any desired year) is a reference book the astrologer is entirely dependent upon for calculating birth-charts, it is astonishing that there has never been a book published that explains how to read and apply the planetary data given in ephemerides. This gap is now filled."
Essex: L. N. Fowler, 1980. 108 pp.
Softcover. Lightly foxed. Good+.