writes:

You really aren't doing "research", for if you were, the first thing
you would obtain is the total number of volcanic eruptions.

Then, if you had some special interest in their effects on private pilots,
you would get the number that occured where private pilots could possibly
be flying.

So it would seem your real objective is to just start another ****ing
contest.

All I asked for was a source for historical NOTAMs, which no one has yet been
able to give me.