Alex Hall has done a lot for the condition of cask-conditioned real ale in America.
Now, he has done more, creating a mashup of his Cask Beer Finder Database and Google Maps. It's an on-line map of "all known bars and restaurants in the United States that serve cask-conditioned craft beer" ... as those accounts alert Alex Hall that they do so!
In addition to indicating which brewpubs, restaurants, and bars serve 'classic' cask-conditioned beers, Mr. Hall has also included those that serve tank-conditioned and keg-conditioned beers, "as long as these are 100% naturally carbonated, and extraneous gas is not used at any time in the dispense."
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This map is special enough that I've embedded it above. As Mr. Hall updates his map, it will be updated here. But, please: if you wish to learn more about cask-conditioned real ale, visit his site at cask-ale.co.uk/us/.