I have been auditing an excellent online facilitated course on instructional design, and stumbled onto an excellent website by Don Clark: Big Dog & Little Dog's Performance Juxtaposition. The website not only has great content about ID, but also reflections and content on the Art and Science of leadership.
There is a section on leadership relating to teams that has real depth. As you work on your own district, school, or instructional leadership team, I promise you'll find something helpful here. Just trying to make sure you have all the support your need; your work on teams is both difficult and important.