"Wham, Bam, Thank You, Ma'am"

[Shapiro, Fred]

I believe this expression was discussed previously on this list.  Here is earlier evidence, passed on to me by Jay Dillon:

Thomas Heggen _Mister Roberts: A play_ (1948), page 105:

GERHART: Well, there goes the liberty. That sure was a wham-bam-thank you, ma'am!
[. . .] But, by God, it was worth it. That liberty was worth anything!

Fred Shapiro

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