  Observation of a sequence of resonances at an e-e- collider would suggest
bound states of strongly coupled constituents carrying lepton number. Obvious
candidates for these exotic constituents are leptoquarks and leptogluons. We
show that under reasonable assumptions, the existence of one leptogluon flavor
of appropriate mass can give rise to sizeable ``leptoglueball'' production
rates and observable resonance peaks. In contrast, one needs two leptoquark
flavors in order to produce the analogous ``leptoquarkonium'' states. Moreover,
cross-generational leptoquark couplings are necessary to give observable event
rates in many cases, and leptoquarkonium mass splittings are too small to
resolve with realistic beam energy resolutions.
