1. Introduction  
2. Observations and Data Reduction  
3. Data Analysis  
3.1. Recombination Lines  
3.2. Free-Free Continuum  
3.3. Dust Extinction  
3.4. Local Overlap  
3.5. Fitting Procedure  
4. Results and Discussion  
4.1. Results  
4.2. Physical Properties of the Continuum Sources  
5. Conclusions