Rocket borne measurements of the altitude distribution of the hydroxyl nightglow emission in the Δν = 2 sequence have been made. Bands originating from the upper vibrational levels (5, 6, and 7) were measured with a band-pass filter in the 1.8 μ. spectral region and bands from the lower levels (3, 4, and 5) were measured in the 1.6 μ. region. The observed emission was distributed in a layer 10 km thick with a maximum at 87 km. In the altitude region below 90 km, the distribution of O2 (1Δ) measured on the same flight was similar to the hydroxyl profiles. These observed distributions extend over a narrower range of altitude than most previous observations, but agree well with the distributions predicted by model atmosphere calculations.