A combined magnetic observatory and laboratory has been completed near Dallas through the cooperation of the Graduate Research Center of the Southwest, the US Coast and Geodetic Survey, and Texas Instruments Incorporated. The installation is located about 15 miles north of downtown Dallas at latitude 32°58′55″North and longitude 96°45′00″West on land provided by the Graduate Research Center. The site was chosen after magnetic surveys revealed that man‐made magnetic noise intensity was less than that of natural fluctuations, and that 60‐cycle magnetic fields generated by ground currents were less than 1 gamma(10−5 gauss).Field inhomogeneities were less than 0.1 gamma/foot. Since the location is part of GRC's 1400‐acre campus, its environs can be kept free of ferromagnetic material indefinitely.