It's safe to say that Betty's marriage to Henry isn't ideal. No way it lasts very long.
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Burt Cooper is aware of Don's real identity as Dick Whitman, but the long-time ad man doesn't care one bit. He's a good guy.
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Mad Men Season 4 Episode 5 Quotes

Who the hell is Dr. Lyle Evans?

Pete

Why don't we just bring Dr. Lyle Evans in here?

Roger