Single- and double-pen architecture

Single-pen architecture and double-pen architecture are architectural styles for design of log, and sometimes stone or brick pioneer houses found in the United States. A single pen is just one unit: a rectangle of four walls of a log cabin. In double pen architecture, two log pens are built and those are joined by a roof over a breezeway in between. 


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 Metasyntactic variable, which is released under the 
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