When Did the Terms "Off-Broadway" and "Off-Off-Broadway" Come Into Use?

 The late 1940s for "off-Broadway" and the end of the 1950s for "off-off-Broadway." More important is that "off-Broadway" tends to be used as a physical designation, referring to both the location and size of a theater, and "off-off-Broadway" implies an intent to create a theatrical experience that is alternative, experimental, and noncommercial with an emphasis on creative collaboration

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