Here's a horrible, horrible story told to me years ago by one of my book dealers.
A fellow dealer had got wind of a large SF book and magazine collection now for sale because the owner had recently passed away.
He went to the house where the owners wife and mother-in-law lived.
There was an excellent collection of books which he bought on the spot.
However there were no magazines to be seen, when he asked about them he was told yes there was a very large collection dating back to the 30s.
Well where are they he asked, oh said the wife they were taking up a lot of space so we burnt them.
After all, she said they were only old magazines, it isn't as if there worth anything.
Ouch, ouch, ouch, ouch, ouch !!!!!!!!!!!!!!!!!