Examples of VLBI maps (at X-band) for the first 12 sources from GC030 listed in Table 3 (0003+123, 0049+003, 0107−025, 0109+200, 0130−083, 0145+210, 0150+015, 0210+515, 0446+074, 0502+041, 0519−074 and 0651+428). Image parameters are listed in Table 3. The first contour level is typically 1% of the peak brightness, with successive contours increasing by a factor of 2. The FWHM Gaussian restoring beam applied to the images is shown as an ellipse in the lower left of each panel.