Junia, A Woman, An Apostle by David Williams is a thorough examination of Romans 16:7. The book is intended to introduce general readership to the technical arguments for the conclusion that the person spoken of in this verse was a woman apostle.
Gayle Haggard's Why I Stayed is a spellbinding book. My reflections, as I read it, revolved around three separate but related themes—marriage, mutuality, and "healing through meeting." We all see the stories others tell about their lives through the prism of our own.
Intellectually we know God is beyond gender; however, using only masculine pronouns sends image-shaping messages to our hearts and minds that are incorrect. By neglecting the feminine imagery for God, we have distorted our understanding of God.
The Gospel According to Eve is a valuable resource for any egalitarian to have in their library. I also recommend it as assigned reading as part of a larger treatment or course on the history of interpretation.
In his book Gender Rolitis: Redeem Unhealthy Gender Roles, Kirk E. Farnsworth uses scripture to examine the dangers of gender-based hierarchy and explores the merits of gifts-based partnership. Included are resources for identifiying spiritual gifts, passions, abilities, traits, and life experiences which might be used to identify and pursue one's calling.
Alice Mathews and M. Gay Hubbard write an extraordinary book about Christian marriage and family. The book's purpose is to explore God's perspective on marriage, an ancient view, for a postmodern world.