This 1950's brochure printed by The National Board of Fire Underwriters promotes the benefits and responsibilities of being a baby sitter.
"The baby sitter business is booming" because the boomers' parents were "busy" after the war.
"Usually, a 'strange noise' can be pinned down to a banging shutter or the cat jumping down from a chair." Or that evil clown that lives in the closet upstairs. Why don't you go ahead and call the police now.