Herbicide damage. Typical damage from 2,4,-D.

If not used nearby, then used some where in the vicinity and moved off target even though inadvertently. On a breeze or on spray turbulence.

No herbicide has been used in a year

I repeat, w/edits --
If not used nearby, then used some where else in the vicinity -- and or neighborhood -- and moved off target even though inadvertently. Moved on a breeze or on spray turbulence and/or volatilized from one of the weed-&-feed products.

damn - i pulled them all

The tomato plants are with in 50 feet of a walnut tree

They say that it is hard to correctly identify tomato virus by photo alone, but I wouldn't rule out CMV as your photo is pretty similar to others I've seen on the web. CMV is spread by aphid and a quick bite spreads the virus from plant to plant. Plenty of hosts besides your tomatoes, so you may not be able to eliminate CMV from your area. If CMV, there's not a lot you can do besides try to control the aphids. Here's an aphid control link: http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7404.html

They say that it is hard to correctly identify tomato virus by photo alone, but I wouldn't rule out CMV as your photo is pretty similar to others I've seen on the web. CMV is spread by aphid and a quick bite spreads the virus from plant to plant. Plenty of hosts besides your tomatoes, so you may not be able to eliminate CMV from your area. If CMV, there's not a lot you can do besides try to control the aphids. Here's an aphid control link: http://www.ipm.ucdavis.edu/PMG/PESTNOTES/pn7404.html