  We present integrated optical spectrophotometry for a sample of 417 nearby
galaxies. Our observations consist of spatially integrated, S/N=10-100
spectroscopy between 3600 and 6900 Angstroms at ~8 Angstroms FWHM resolution.
In addition, we present nuclear (2.5"x2.5") spectroscopy for 153 of these
objects. Our sample targets a diverse range of galaxy types, including
starbursts, peculiar galaxies, interacting/merging systems, dusty,
infrared-luminous galaxies, and a significant number of normal galaxies. We use
population synthesis to model and subtract the stellar continuum underlying the
nebular emission lines. This technique results in emission-line measurements
reliably corrected for stellar absorption. Here, we present the integrated and
nuclear spectra, the nebular emission-line fluxes and equivalent widths, and a
comprehensive compilation of ancillary data available in the literature for our
sample. In a series of subsequent papers we use these data to study optical
star-formation rate indicators, nebular abundance diagnostics, the
luminosity-metallicity relation, the dust properties of normal and starburst
galaxies, and the star-formation histories of infrared-luminous galaxies.
