4000??!!
...and I thought my record collection was big! :D LOL!
Another man who has a huge collection is Joel Whitman,who helped Billboard put out "The Billboard Book of Top 40 Hits". He has an underground vault and in the picutre I saw,literally dozens of cabinets & files!
He's been collecting since the early 1950s,so,I'll never have as many as these guys.