The title says it all. This is our favorite attachment resource, and it's by a local therapist, to boot.

Speaking of parental attachment histories, this is a great resource for parents who find that raising their children is also bringing up issues from their own childhoods. Resolving your own issues (we've all got 'em) so that you can respond, instead of react to your children is an essential component of attachment therapy and therapeutic parenting.

Lovely novelized description of a therapeutic parenting approach. A different kind of read, and a nice complement to Attaching in Adoption. A bit "old-school" in parts, but an important update on the author's website outlines how his approach has evolved (less holding, less provocative, more emphasis on parental attachment histories), and lists what you should NOT be doing in attachment therapy.

UPDATE: This book is now in its second edition, and I believe it now reflects the author's more modern approach to attachment work. By the way, Dan Hughes is a wonderful speaker, should you get the chance to attend a workshop.

Detailed, technical description of play-based attachment therapy. You might start with Playful Parenting, and follow with this book for techniques that are specific to children with disordered attachment.