The report is an appendix to PB-194 376 and contains the following topics: Identification of odor producing air pollutants; Three-digit zip code areas of the United States; Summary of survey results from questionnaires received from 100 local air pollution control agencies; Location of field investigation sites and public opinion survey areas; Sensory evaluation of odors data; Findings of public opinion survey of residents - summary of test and control groups for all cities combined; Findings of public opinion survey of residents - summary, by income, by occupation, by education, and by age; Findings of public opinion survey of businessmen - summary of test and control groups for all cities combined and individual cities; Public opinion survey questionnaires and instructions to interviewers.