It is Macy's. They just showed up on my credit report last month. Not for negative stuff, but I had a Marshall Fields card that I paid off about 3 years ago, never used again but never actually closed.
I guess when Marshall Fields sold off to Macy's, they sold my account too, and now Macy's is actively reporting it again.
On my bureau, the contact info is:
MACYS DEPARTMENT STORES
3039 CORNWALLIS RD
DURHAM , NC 27709
But no phone #.