  We define a complete set of scalar master integrals (MIs) for massive 2-loop
QED Bhabha scattering. Among others, there are thirty three 2-loop box type
MIs. Five of them have been published in (semi-)analytical form, one is
determined here, the rest remains to be calculated. Further, the last four so
far unknown 2-loop 3-point MIs are identified and also computed here.
