[lazystar]

Where would one go to purchase specialty cigarettes, without those compounds?

[IAmGraydon]

Any tobacco shop. You can buy empty cigarette tubes, which are basically just the paper tube with a cotton filter attached. They don't contain any extra additive. You can then load any tobacco you like with a cigarette loading machine (also known as an "injector"). You can also buy pure, high quality Dutch tobacco that's far higher quality than anything that would have been loaded into a cigarette in the 1970s.

[christophilus]

For pipe smokers, there’s a formula called “Doc Watson” which includes cigarette tobacco. It’s excellent. You will get a nicotine biz from it unless you sip it.

[ssl-3]

Somewhere else in the world that isn't the US, I presume. They aren't here anymore.

(One can make them themselves, just as one can make anything else by oneself, but then one would not be purchasing them as completed items.)