Squash and tomato are both New World crops and I think that both originated N. of the Panama Canal . ----- Original Message ----- From: "Max Withers" <maxwithers@gmail.com> To: <pbs@lists.ibiblio.org> Sent: Thursday, March 18, 2010 9:55 PM Subject: Re: [pbs] Native N American crops > The only "major" crop plant native north of the Rio Grande is commonly