ERRATUM: "A Spitzer Infrared Spectrograph Spectral Sequence of M, L, and T Dwarfs" (2006, ApJ, 648, 614)

In the original article, the widths of the IRS H₂O, IRS CH₄, and IRS NH₃ indices were too small by a factor of 2 and should be 0.3, 0.6, and 0.6 μm, respectively. The correct version of Figure 7 is also presented here. We note that none of the conclusions of the paper are changed using the wider indices and we thank Stan Metchev and Amanda White for bringing this to our attention.