Dry cleaning is probably the only way suitable. I've washed pellon lined cotton, but pellon has cotton content, so the fabrics jive. Never washed anything of significance, though, just a couple of day dresses.
Sometimes it's worth the $8-$15 for me to dry clean, as I trust my cleaner. Just make sure to disclose that it's been cleaned, there are people out there that search for items where the seller has taken the cleaning risk.