A day in the life

I’ve been photographing nearly all the stamps from my late dad’s collection with a view to maybe converting them into cash.
There must be getting on for 4000 stamps - some of which he stuck in to an album when he was just a boy… and some probably a few months before he died.
I love how every stamp has its own story, never to be told - who licked the stamp? Where were they? What was in the letter?
Times gone - and lost forever.