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Here's an interesting article about the logos of some of the big Hollywood studios, including Dreamworks SKG, Paramount Pictures, MGM, etc. Some interesting notes:
1. Warner Bros. (yes, that's legally "Bros." not "Brothers") was founded by four Jewish brothers who emigrated from Poland: Harry, Albert, Sam, and Jack Warner.
2.The original logo of Paramount had 24 stars, which symbolized Paramount's then 24 contracted movie stars.
3.Many of Columbia Pictures' early productions were low-budget affairs, so it got nicknamed "Corned Beef and Cabbage."
Link to the article