No known published data. No.
It still is being used
There ARE no websites that teach "EVERYTHING" about firearms- I have been a student of firearms for over 50 years, and I am still learning. Firearms are an incredibly broad topic- I would suggest you narrow down your interests a lot, and find some specific aspect of firearms you would like to study. That might be the history of firearms, rifle target shooting, hunting, skeet shooting, etc.
The first globe opened by William shakespeare is not still around and hasn't been for sometime, but they re-built a new globe which is very similar to the old globe, and that is still around at the moment, so it is in a way still around.
No
No.
No.
Yes, they do.
No
One of the most beautiful countries in the world, rich history, and the oldest language still active in Europe.
Reggie Miller, with 24. Jamal Crawford with 25 and still active.
yes they still do there are many active paratroopers on active duty still to this day.
Yes, very useful. They demonstrate a part of our history and culture. There are a number still in active service providing excursion tours.