  This report describes the generation of fully calibrated spectra of the K
giants HR 6348 and HD 173511 from data obtained with the low-resolution modules
of the Infrared Spectrograph (IRS), with an emphasis on the spectra from the
Long-Low (LL) module. The spectra were calibrated using Kurucz models and IRS
observations of the A dwarfs alpha Lac and delta UMi. The calibration process
required mitigation for fringing in the first-order LL spectrum and a faint red
excess in alpha Lac which may arise from a low-contrast debris disk. The final
calibrated spectrum of HR 6348 has a spectroscopic fidelity of 0.5% or better
below 29 um, with an uncertainty increasing to ~1% at 33-37 um. The final
calibrated spectrum of HD 173511 has a spectroscopic fidelity of ~0.5% at all
wavelengths below 35.8 um.
