All I would have said is "mommy" and "daddy" (I was three). But wasn't postage only 2 cents, and went up to 3 cents around then? And you forgot these:
"If those commie s.o.b.'s try anything with us, Ike will nuke them into oblivion"
"8 cents for a white castle!! How dare they!"
"10 cents for two twinkies. What a shame."
"Where's the church key? I want to open this can of beer."