Production of Missing cbar{c} and bbar{b} States

The heavy quarkonium c\bar{c} and b\bar{b} resonances have a rich spectroscopy with numerous narrow S, P, and D-wave levels below the production threshold of open charm and beauty mesons. The mass predictions for these states are an important test of QCD calculations. We review some recent work describing the production of missing \eta_b(nS), 1^3D_J(b\bar{b}) and 1^1P_1(c\bar{c}) and 1^1P_1(b\bar{b}) states.