ISO Stonewall Kitchen New England Clam Chowder
Did you go to their website and use the store locator? There's a lot of places that carry SWK, including Whole Foods, albeit it does not list specific SKU/products.
"We have an extensive network of high quality retailers who also carry Stonewall Kitchen products. Please use our Search Form below or call 1-800-826-1752 to find a retailer near you.
To search a wider range only use the first 3 digits of your zip code."