maps of five large molecular clouds and IRS data on a number of sources, and some of our targets are drawn from these two projects. Finally, some targets are chosen from cores observed in both a number of follow-up *Spitzer* General Observer (GO) programs and by other observers with Guaranteed Time Observations (GTO) data.

Consequently, this survey is certainly not unbiased. The primary criteria for selecting sources from the various projects were as follows: (1) provide complementary data to the *Spitzer* c2d data, (2) create as much overlap as possible between the various programs obtaining complementary data at submillimeter and millimeter wavelengths, and (3) obtain submillimeter observations of the most scientifically interesting cores. Regarding the second criterion, Table \[overlap\] lists whether or not each core observed in this survey is included in surveys with SCUBA (850 [$\mu$m]{}; Young et al. 2006), MAMBO (1.2 mm; J. Kauffmann et al. 2006, in preparation), and SIMBA (1.2 mm; K. Brede et al. 2006, in preparation), as well as a complementary program to obtain $\sim$1 resolution [N$_2$H$^+$]{} (1-0) and CS (2-1) maps with the Five College Radio Astronomy Observatory (FCRAO; C. De Vries et al. 2006, in preparation) and a project to construct radiative 