We have recently completed at Columbia University a survey with a 1.2 meter telescope of 2.6 mm CO emission from the first galactic quadrant. The beamwidth of this telescope − 7.5′ at 2.6 mm - is optimal for a large-scale galactic survey: it is as small as that of the best 21-cm surveys but not so small that undersampling is required to finish a survey in a few hundred days of observing. The survey contains more than 3000 spectra between longitudes 12°and 60°and latitudes −1°and +1°. Spectra were taken every beamwidth for |b|≤0.25° and every two beamwidths elsewhere. Integration times, which averaged about 8 minutes, were adjusted to give an rms noise level of 0.3 K per 0.5 MHz spectral channel.