Assesses the completeness and quality of 1975 survey data on attitudes toward the experimental housing allowance program held by a sample of landlords in St. Joseph County, Indiana. From the 915 field-complete records, a sample of 792 records was derived for studying attitudes without double-counting responses by landlords who owned more than one property. Checks for internal consistency revealed 178 errors affecting 5.8 percent of the field-complete records. The errors were corrected by reference to the original questionnaires. The incidence of missing responses is insignificant except for one question on respondents' satisfaction with the housing allowance program. Weights were calculated to offset potential biases when the survey records are used to estimate the attitudes of the county's landlords.