Tesco.
a liquior store
You can because Whiskey is Irish. Whisky is Scottish.
Um ... at a liquor store. lol. That is if you are in Canada, if your not well then find a liquor store with a large selection.
No. There's a limit on liquids. You could use the whiskey to blow up the plane. You can buy whiskey at the airport store though.
at the liquor store, stupid!
Most likely from a private collector.
Anyone can buy one if they have the money. Hope this answered your question.
amazon.com
The distillery at Mt. Vernon was restored and some whiskey was made. It was sold on site at Mt. Vernon. I do not think any is currently available, so you would have to buy it on the secondary market, from a collector.
no frills
Kessler's is sold everywhere, at least in California. Try a supermarket.
Mr. Boston or Jacquin's make a rock and rye whiskey that is available at your local liquor or State store. There are several recipes for making your own on the Internet by using a GOOD Rye Whiskey (such as my favorite, Old Overholt) and a mixture of other goodies. These are fun to check out and probably more fun to make.