The Marion March Electronic Research Library gives you access to many resources unavailable except to colleges and universities.

If you are interested in original astrological writings from authors who wrote or had their work translated to English, then Early English Books online is a rich resource with all books printed in English from 1473 to 1700 CE. You will find authors such as William Lilly, Richard Allestree, John Bishop, Nathanael Culpepper, and many more.

JSTOR Arts & Sciences II is a collection of over 900 scholarly journals that provides a rich resource for searches on any number of topics, including recent scholarly research on astrology.

The enrollment fee of $40 provides you with three months or $120 for one year of access to these academic research libraries.