Portable Trade Show

Is there a list of trade shows in the United states?

I would like to be able to attend various trade shows in the United States. Does anyone know how I can obtain a list of these shows? Is there a trade show site? I have looked on the net and I don't seem to find a definitive list. Any help with this would be appreciated. Thank you.

Public Comments

1. should be......try google
2. Start with industry associations, e.g. National Restaurant Association for food service. Industry publications are another source. These should all be available on line.