We have measured ratios of branching ratios of B mesons including
charmonium in the final state and use these ratios to derive B meson branching
fractions.  Results are also compared to predictions of factorization.  We have
searched for B^+_c -> J/psi pi^+ and set a limit on sigma . B.  We observe
Lambda_b -> J/psi Lambda and measure the mass M(Lambda_b) = 5.623 +/- 0.005
+/- 0.004 GeV/c^2.