1. Introduction

2. X-ray Data and Analysis
2.1. X-ray Spectral Analysis
2.2. Emission Line Feature in CXOSW J104404.0+590241

3. Multi-wavelength X-ray Source Identification
3.1. Extended X-ray Sources

4. The Log N vs. Log S Relation

5. Multi-wavelength Properties of the X-ray Sources
5.1. X-ray and Optical Properties
5.2. X-ray Hardness Ratio
5.3. X-ray and mid-IR Properties
5.4. X-ray Sources Extended in Optical
5.5. Radio-loudness

6. Conclusions