Excerpt from the report Summary: An increasing proportion of total sales of farm products is coming from farms with $40,000 or more of marketings. For example, in 1959 the proportion was 33 percent, compared with 16 percent in 1939. This increase came mainly from the expanding number of farms in the group rather than from the increasing value of sales per farm. From 1939 to 1959, the increase in number of farms with sales of $40,000 to $99,999 was 242 percent while the increase in output per farm was only 8 percent. The number of farms with sales of $100,000 or more increased 300 percent, compared with a 10-percent increase in output per farm.