Well then, Rob. I apologize. And to you, also, Joe. Truly.
Sometimes I read the acknowledgments and credits in the fronts of books and stuff. I just looked in the Standard Catalog to see if Mr. Haber was listed there, but he's not. Even though some of what's in there could be traced back to him.
I doubt that I'm the only one here who's heard of Mr. Haber. Minimally, Mr. Lipset looks here on occasion, I'm certain he knew Mr. Haber. And I'd think a few others here do.
As for Mr. Berger, I never met, nor corresponded with, nor talked on the phone with him. I've heard of him. Here's a link about old times that mentions him, and Mr. Haber....
http://www.oldbaseball.com/refs/lerner/irv_lerner.htm
And whenever I dig down to a Baseball Encyclopedia, I'll scan the credits to show Bill Haber's name, there's no way they've not credited him.
As for the top 10 list, I'd think bubbling under there is Scot Reader, Ted Z, and Mr. Masson. The three know a right smart about old cards, they're collectors, and they share their knowledge.