This paper gives a brief overview of how qualitative and quantitative interviews can be combined to get a fuller picture of a program and its outcomes. This concept is illustrated through a discussion of evaluations of the Employment Intervention Demonstration Program, a multi-site research demonstration project funded by the Substance Abuse Mental Health Services Administration. At the Arizona site, a standardized interview protocol was used to gather quantitative information about 338 participants and outcomes for them. A series of qualitative interviews was held with a smaller subset of participants. Combining the results of the two interview approaches gave a more complete picture of program effectiveness and characteristics. A crosswalk for the two data sets is described. (SLD)