Parenting Press provides excellent child guidance, parent education, emotional competency, temperament, and children's safety books. They offer you concrete information and practical skills you can use immediately.
You may wish to check out their parenting tips archive, downloadable brochures and monthly e-zine
Talaris Research Institute is dedicated to discovering how children think, feel and learn. They create easy-to-read material that translates research into real life.
Two projects you may find interesting are the Spotlights and the Timeline.