The "Ultimate Barbie Doll Book" lists what each doll came with, but it does not show pictures of those items. I really like this one, too, because it lists what the doll's body markings should be. "Barbie Doll Photo Album" has really nice pictures of the doll MIB, but some of the sets from the 90s are missing.
I have yet to find a really nice online guide for Barbie, but I second the idea of posting pictures and having members here help you with iding your accessories.