We thank Phil Appleton, Jim Brauer, Harold Corwin, Alessandra Contursi, George Helou, Steve Lord and Schuyler Van Dyk for their many insightful thoughts on galaxies. We thank Carl Grillmair for globular cluster insights. We thank Olga Pevunova, Brian Penprase and Barry Madore for ancillary optical data to perform validation checks. A special thanks to Alessandra Contursi and George Helou for providing the ISOCAM image of M51. We owe our gratitude to Will Saunders for guidance on extrapolating surface brightness radial profiles. And finally we thank David Block for his careful review of this paper. This research has made use of the NASA/IPAC Extragalactic Database (NED) and the Infrared Science Archive (IRSA), which is operated by the Jet Propulsion Laboratory, California Institute of Technology, under contract with the National Aeronautics and Space Administration (NASA). This publication makes use of data products of the 2MASS, which is a joint project of the Univ. of Massachusetts and the Infrared Processing and Analysis Center, funded by the NASA and NSF. This work was supported in part by the Jet Propulsion Laboratory, California Institute of Technology, under a contract with NASA.