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We present UBVRI light curves for the bright Type Ia supernovae SN 1990N inNGC 4639 and SN 1991T in NGC 4527 based on photometry gathered in the course ofthe Calan/Tololo supernova program. Both objects have well-sampled light curvesstarting several days before maximum light and spanning well through theexponential tail. These data supercede the preliminary photometry published byLeibundgut et al (1991) and Phillips et al (1992). The host galaxies for thesesupernovae have (or will have) accurate distances based on the Cepheidperiod-luminosity relationship. The photometric data in this paper providetemplate curves for the study of general population of Type Ia supernova andaccurate photometric indices needed for the Cepheid-supernova distance scale.Comment: AAS LaTeX, 30 pages, 10 figures, to appear in the Jan 1998  Astronomical Journal. Figs 1 and 2 (finding charts) not include

Optical Light Curves of the Type I[CLC]a[/CLC] Supernovae SN 1990N and SN 1991T