Spectroscopy of 206 QSO candidates and radio galaxies.

We present the results of spectroscopic observations of 206 objects, 113 of which are suggested identifications of radio sources whose positions were measured at the University of Texas Radio Astronomy Observatory (UTRAO). The remaining 93 objects include 72 from various other lists of radio source identifications, and 21 from lists of optically selected ("radio-quiet") QSO candidates with ultraviolet excess. Of the 206 objects, 95 are definitely QSOs, nine have apparently continuous spectra (and are probably QSOs or related objects), 14 are galaxies (most with emission-line spectra), and 46 are galactic stars; results for the remaining 42 are inconclusive, although 20 of them are likely to be QSOs, and 10 of them stars. The high reliability of the Texas identifications is confirmed; including results from an earlier paper, we find that of 60 blue stellar objects lying within 3" of the UTRAO positions, 49 are definitely QSOs, eight are very probably QSOs, three yield inconclusive results, and none is definitely a star. Optical positions of 66 of the objects discussed here are given, with rms accuracy of 0,5, in the Appendix. Subject headings: galaxies: general - galaxies: redshifts - quasars - radio sources: general - stars: faint blue