by plotting on up-to-date city maps a sample of such places, as 

 listed on the most recent directories, and then outlining the 

 boundaries of the areas so that they would enclose equal nvunbers 

 of plotted establishments amd so as to divide the space between 

 two plotted establishments belonging to two different areas 

 approximately equally betw^een the two areas. From the total 

 number of such areas (comprising the whole city), a probability 

 sample of areas was selected and the selected areas were fully 

 canvassed by the field staff. 



Below are listed the ten cities used for this study, the number of 

 interviews obtained through the probability area sample, the 

 number of interviews obtained through the probability list Seimple , 

 and the total number of interviews obtained: 



City 



Atlanta, Georgia 

 Chicago, Illinois 

 Cleveleind, Ohio 

 Denver, Colorado 

 Houston, Texas 

 Los Angeles, California 

 New York, New York 

 Omaha, Nebraska 

 Portland, Oregon 

 Springfield, Massachusetts 



Totals 



394 



4,024 



394 4,418 



(1) All of city was included but it 



was divided into 30 assignments. 



