1. Introduction  
2. Observations and Data Reduction  
2.1. Target Selection  
2.2. Spitzer IRS and MIPS Observations  
2.3. Optical Spectroscopy  
2.4. IRAM-30 Millimeter Observations  
3. Stellar Properties  
3.1. Edge-on Disks  
3.2. Accretion Properties  
4. Results: Disk and Disk Hole Parameters  
4.1. Disk Mass  
4.2. Disk Hole Parameters from SED Modeling  
4.3. Dust Composition  
4.4. Notes on Individual Sources  
5. Discussion  
5.1. Robust Selection Criteria  
5.2. Properties of the Cold Disks  
5.3. The Possible Origins of the Inner Holes  
6. Summary