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.{{cite journal |last1=Wright |first1=Martin |title=The Antecedents of the Double-Pen House Type |journal=Annals of the Association of American Geographers |date=1958 |volume=48 |issue=2 |pages=109–117 |doi=10.1111/j.1467-8306.1958.tb01563.x |jstor=2561422 |url=https://www.jstor.org/stable/2561422 |access-date=1 June 2022|url-access=subscription }} A saddlebag house is a subset of double-pen architecture with two rooms, a central chimney, and one or two front doors.