Where to get propane tank in MD, VA, PA, or NC.

I have been looking for a 150 or 250 gal old propane tank for a few months to turn into a smoker. If anyone knows where I can buy one, find one, come across one, trip over one, run into one, steal one (kidding), etc... please let me know. I have been calling places, looking on craigslist, emailing propane companies etc, asking people at work etc... I would like to have one built before summer has come and gone...
Ask any neighbors, people at work, at church, friends and family etc.. I am frequently in Hampton Roads Virginia and in Southern Maryland. So I can get to North Carolina, Virginia, Maryland, DC, Deleware, Pennsylvania. OK well you get my point...



Thanks!!!!!!!!!!!!!!!!!!!!!!!!!!!