I believe that there is a resident on this forum who has BF an adopted child-not naming names as I'm sure she'll pop in and read this thread anyway.
I think it is absolutely amazing what the female body is capable of doing. It's a pity that adoptive BF isn't more widely promoted to prospective parents as a way to bond with their child regardless of whether they are a baby or not.
Dr Karleen Gribble is a wonderful expert in this field with much research into the benefits to children being BF-she also has personal experience with this.