1 INTRODUCTION

2 SURVEY DESCRIPTIONS AND DATA SETS

2.1 RMS Survey

2.2 The BU-FCRAO Galactic Ring Survey

2.3 Resolving the Kinematic Distance Ambiguity

2.4 Matching RMS Sources with GRS Clouds

3 DISTANCES AND LUMINOSITIES

3.1 RMS-GRS Cloud Associations

3.2 Distances to High Latitude Sources

3.3 Luminosity

4 CLOUD PROPERTIES

4.1 Deriving Cloud Masses and Physical Sizes

4.2 Galactic Distribution of Molecular Gas

4.3 Properties of RMS-GRS Cloud Associations

5 GALACTIC DISTRIBUTION OF YOUNG OB STARS

5.1 Galactic Latitude Distribution

6 SUMMARY