Question for you WMATA experts; I know that Harry Weese (Stan Allen was the PM - he became friendly with my parents in retirement - they were neighbors here in Chicago- great guy) did the architectural design, but who did the tunnels and technical (aka structural & civil engineering) portions of the design? Obviously Weese, both the man and the firm, is long gone.
For those that had to work with him on the engineering side, "great guy" so far as things professional were concerned was not in our vocabulary.
Harry Weese was the General Architectual Consultant which meant they developed all appearance related concepts and related general design standards. The appearance of the station vaults was their concept, as was the use of clay tiles for the platform surfaces, size and shape of granite platform edges, concepts of mezzanines, station entrances, etc. A very specific part of the station design was to have a sense of openness, particularly avoiding the forest of columns so common in New York and elsewhere. There were however, numerous areas where his solely appearance related obsession conflicted with good engineering and in some cases ease of people movement.
The General Engineering Consultant was DeLeuw Cather and Associates, again a company that no longer exists. They were bought by Parsons Engineering, a construction company quite a few years after I left them, and I do not know what has happened since. As General Engineering Consultant they wrote standards for everything engineering related, such as alignment standards, clearances, ventilation concepts and material standards for such things as concrete, steel, etc. This included interfaces with essentially everything such as the city utilities, roads and streets, and everyone else that had anything built anywhere near a WMATA line. Sometimes this involved proximity to and protection of facilities that did not exist in so far as the public was concerned. They also did the detailed engineering, drawings and specifications for track (I was part of that) and electrification.
There was also the General Construction Consultant, which was Bechtel, which oversaw the construction contractors and construction related issues and interfaces.
The vehicles themselves were in another world, and at times seemed to be in another solar system.