Excerpts from the report: This report is the fourth in a series based on regional studies of egg quality and marketing practices in the North Central States. It concerns the extent to which recommended management practices were used by poultrymen, and the relation of such practices to the quality of eggs marketed. This report concerns the poultry flock management and egg-handling practices followed by 730 midwestern farmers during July, August, and September of 1949 and August and September 1950 and the effect of these practices on the quality of eggs marketed. This report shows that the farmers who followed seven recommended practices sold eggs that averaged 90 percent Grade A and only 4 percent stained and dirty. As the number of recommended practices that were followed decreased the percentage of eggs marketed that were Grade A decreased and the percentage of eggs that were stained and dirty increased.