I noticed that you are missing the back covers for issues 2 - 7 of Dark Crisis Col 1. Here are the back covers for 2 - 7. I will list what each back cover goes to before the photo of the back cover. The cover for #7L is a wraparound cover.
Dark Crisis Vol 1 #2A back cover
Dark Crisis Vol 1 #3A back cover
Dark Crisis Vol 1 #4A back cover
Dark Crisis Vol 1 #5A, #5G and #5H back covers
Dark Crisis Vol 1 #6A back cover
Dark Crisis Vol 1 #7L back cover
