A new planet-wide control network of Mars was computed in September 1982 using a large single-block analytical triangulation with 47,524 measurements of 6853 control points on 1054 Mariner 9 and 757 Viking pictures. A total of 19,139 normal equations were solved, and the resulting standard error of measurement was 18.06 μm. Appendix A lists those control points that are identified by name and letter designation: Appendix B gives the areographic coordinates of the control points. Both appendices are available on microfiche. The coordinates of the Viking 1 lander site are latitude 22.480¿, longitude 47.962¿, and radius 3389.32 km.