This is the main study on the onion futures question. Just be careful, others subsequently came to more mixed conclusions. http://chla.library.cornell.edu/cgi

This is the main study on the onion futures question. Just be careful, others subsequently came to more mixed conclusions. http://chla.library.cornell.edu/cgi/t/text/pageviewer-idx?c=chla;cc=chla;rgn=full%20text;idno=5033566_4125_002;didno=5033566_4125_002;node=5033566_4125_002%3A6.3;view=image;seq=0019 http://chla.library.cornell.edu/cgi/t/text/pageviewer-idx?c=...