There's a site (http://www.dorisdaymagic.com/) devoted to what "might have been" if Doris Day accepted the film role she was offered, including Mame. Another was The Graduate as well as Hello Dolly.

http://www.dorisdaymagic.com/uploads/1/1/6/0/11608548/6749172_orig.jpg

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http://www.dorisdaymagic.com/uploads/1/1/6/0/11608548/3142640_orig.jpg