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We present forty-one near infrared (NIR, 0.7-2.5 microns) spectra from normalType Ia supernovae (SNe Ia) obtained at epochs ranging from fourteen daysbefore to seventy-five days with respect to the maximum light date in theV-band. All data were obtained at the IRTF using the SpeX instrument. Weidentify many spectral features, measure the Doppler velocities, and discussthe chemical distribution of explosion products in SNe Ia. We describeprocedures for smoothing data, fitting continua, and measuring absorptionfeatures to insure consistency for measurement and analysis.  This sample provides the first opportunity to examine and compare a largenumber of SNe Ia in this wavelength region. NIR data are a rich source ofinformation about explosion products whose signatures are blended or obscuredin other spectral regions and NIR observations probe a greater radial depththan optical wavelengths. We analyze similarities and differences in thespectra and we show that the progressive development of spectral features fornormal SNe Ia in the NIR is consistent with time.  Measured Doppler velocities indicate that burning products in SNe Ia aredistributed in distinct layers with no large scale mixing. Carbon is notdetected in these data, in agreement with previous results with NIR dataestablishing very low limits on carbon abundance in SNe Ia. Carbon burningproducts, O and Mg, are plentiful in the outer layers suggesting that theentire progenitor is burned in the explosion. The data provide a resource forinvestigations of cross-correlations with other data libraries that may furtherconstrain SN Ia physics and improve the effectiveness of SNe Ia as cosmologicaldistance indicators.

A Catalog of Near Infrared Spectra from Type Ia Supernovae