  After a review of CMBR correlations and recent observations, a study of
possible CMBR observations of the QCD early universe phase transition is
discussed. A model for the QCD bubble walls gives the surface tension found in
lattice calculations, and a 1+1 dimensional treatment in this model for bubble
collisions shows an interior gluonic wall, a disk with the thickness of a
nucleon and horizon size radius. This could lead to a similar magnetic wall,
which would produce B-B type CMBR polarization correlations distinct from very
early universe models. The study of magnetic fields produced in bubble
collisions in MSSM models with a first order Electroweak Phase Transition is
also discussed.
