Distributed across anonymous joint ventures, tangled bureaucracies, and vested interests, uncounted designers and producers of the built environment in the United States and beyond its borders constitute a formidable system of private interest. We designed this downloadable resource for students, teachers, and professionals in the arts and sciences of the built environment — available as a downloadable PDF and on instagram — offering a provisional portrait of the A&E System. This system’s power is well established and diffuse, which makes it both important and difficult to understand.