  The Fermilab Tevatron is currently the only collider capable of producing and
studying top quarks. The dominant mechanism for top quark production at the
Tevatron is t-tbar production via the strong interaction. The precise
measurement of the cross section of this process is a test of the QCD
prediction. In Run II of the Tevatron it should be possible to achieve an
experimental error on this cross section which is comparable or better than the
current theoretical precision. This paper presents the basic event selection
criteria for t-tbar events at the Tevatron and the latest measurements of the
t-tbar cross section.
