yes much is changed. But we have the "time travel" ability through things like the volume of letters you have. I recently picked up a publication of rare photos of Andy Warhol and company from the mid '60's by the photographer Larry Fink. Other shots included were some great mid '60's NYC skyline shots, street shots from the Vietnam Moratorium Marches later on etc. from NYC and in DC at the Washington Monument. Small Italian printer, very good heavy stock paper and large format hardcover. I go for the unusual but meaningful. I missed out a few years back when I hesitated to buy a copy from the very small original run of Paul Kantner's "Nicaragua Diaries". The first rarity I ever bought was way back in the mid '70's when I got a rare binding of "Evangeline" by Longfellow. It was mid sized, gilt edged paper, type font was a classic style and the paper stock was a nice near beige/shell color. The binding was the thing that stood out most to me because it was like the normal hard cover panels but with padded light beige/brownish suede with the title and author imprinted in gold on the suede. Very unusual. Never saw another like it and I took it to be a custom binding that someone had done which meant to me that for someone to do that the volume must have been very special to them. Sadly I lost it in the shuffle of life.