[en] The 46-m ARO radiotelescope has been used to measure linear polarizations at 10.5 GHz (lambda2.86 cm) for 68 extragalactic radio sources. This continues a major program to measure linear polarizations and position angles (to determine rotation measures) on a large sample of radio galaxies and quasars. For 80% of the sources, our polarization value is at the shortest wavelength yet measured. The results confirm a strong tendency for flat- and inverse-spectrum sources to have 10.5-GHz polarizations seldom greater than 5%, whereas the spread in the degree of polarizations for the steep-spectrum sources is significantly larger