Leong et al. (1971) discovered LMC X–3 during the first year of the *Uhuru* mission. In 1983, Cowley et al. (1983) showed via dynamical observations that the compact X-ray source in this 1.7-day binary is a black hole. In Orosz et al. (2014) we use new optical data to derive a much-improved dynamical model of the system, which contains a B-type secondary. Of chief importance, Orosz et al. report tight constraints on the orbital inclination angle of the binary, deg, and the mass of the black hole, .