John Hancock Center Q's

Just wondering if anyone may be able to help me. I have a university assignment at present on the structural system of high rise buildings. I've chosen the JHC as my case study, and have had no trouble finding info about the primary structure ie. diagonalised braced tube. I am, however, finding it increasingly difficuly to find any info on the secondary structure of the building - structural floors, internal columns, walls, windows, cladding attachment details etc etc. If anyone has some information that may help Jason>