In this video I discuss the origins of the dogtrot as a plan archetype, its history and how it came to be. Although commonly thought of as a Southern building type early settlers of Pennsylvania and New Jersey, the Swedes and Finns brought with them the "pair cottage" from Northern Europe. This shaped the early dogtrots in the United States. It was widely adopted in the South because is offered an ingenious method of passively cooling the home. This is the first of a three-part video series. In part 2 I discuss the design process for the modern dogtrot floor plans I've developed which were inspired by these early prototypes.