Radio maps at 1.4 GHz from FIRST data of the seven high-z QSOs in the sample with peak flux densities between 0.5 and 0.9 mJy beam⁻¹. These sources are not included in the FIRST catalogue. The levels were computed as −2, 2, 2.8, 4, 5.5, 8, ...times the rms (0.15 mJy beam⁻¹). The central cross indicates the optical position of the high-z QSOs, while the beam size is reported in the bottom-left corner.