1. INTRODUCTION  
2. DATA  
3. METHODS  
3.1. Membership Analysis  
3.2. Visual Quality Check  
3.3. Data Access - SDSS Value Added Catalog  
4. THE OCCAM DR16 SAMPLE  
4.1. Modifications to the High Quality Sample  
4.2. Comparison to Previous Work  
5. MEASURING GALACTIC TRENDS  
5.1. Choosing a Distance Catalog  
5.2. Fitting Galactic Abundance Gradients  
6. THE GALACTIC METALLICITY GRADIENT  
7. GALACTIC TRENDS FOR OTHER ELEMENTS  
7.1. Galactic Trends for α-Elements  
7.2. Galactic Trends for Iron-Peak Elements  
7.3. “Odd-L” Gradients  
8. THE EVOLUTION OF GALACTIC ABUNDANCE GRADIENTS  
8.1. Iron  
8.3. The Evolution of [X/Fe] Gradients  
9. CONCLUSIONS