Chapter 4 on data calibration has been revised to describe the modern VLA data format and calibration in . Similarly, old VLBI formats have been excised from Chapter 9 to avoid confusion with more modern practices. Nonetheless, the VLA archive for the pre-expansion VLA is widely and productively used and we suspect that there are VLBI users with older data files which may still need reduction and analysis. This appendix is used to address first the older VLA data format and initial reduction steps and then the older Mk III and Mk IV VLBI formats.