  The DLS collaboration has recently completed a high statistics study of
dilepton production at the Bevalac. In particular, we have measured dielectrons
(e+e-) from p-p and p-d collisions to understand the basic dilepton production
mechanisms in the energy range from 1.05 - 4.9 GeV. These data can be used to
determine the basic processes which contribute to nucleon-nucleon dilepton
production such as hadronic bremsstrahlung, vector meson processes, and
hadronic Dalitz decay. The data show that a simple elastic bremsstrahlung
calculation is insufficient to explain the data. Theoretical models are
compared with the data. A new high statistics study of Ca-Ca at 1.05 A GeV has
been made to study the collectivity of A-A collisions.
