A friend lost his whole house to a flood on a Texas river a few years back, but many of his lp's were still in his yard. I cleaned some of them and salvaged about half with a soapy brush cleaning followed by an ultra sonic-- but if they are full of silt, be careful with the brushing. If they're full of something else, they actually may clean up more easily.
When you're ready, make a list of your lost LP's. If any are among my extra copies, I'll send them your way.
