As part of the Housing Assistance Supply Experiment (HASE), the final (wave 4) survey of neighborhoods was conducted in Brown County, Wisconsin (Site I of the experiment), from November 1976 through September 1977. The survey had two parts--neighborhood facts compiled from local sources (NLS) and observation of street segments (NSOB). Each had its own instrument and produced a separate data file. This codebook documents the survey variables and a set of analytic variables derived from them. For each variable, the codebook reproduces the exact text from the survey instrument or describes how the variable was derived; specifies all permissible responses; and provides a tabulation of the responses recorded in the final master files of survey records, 108 for the NLS and 9,315 for the NSOB.