I don't know why it took me so long to do this, but it probably had to do with a rekindled interest in these things in connection with the introduction of a train of R188 cars on the 7.
So what I've been doing is analyzing pictures of these strip maps found on R142 and R143 cars on other lines (they all use the same strip map model, so strip maps are interchangeable), and essentially virtually removed the strip map.
