What is this disease?

[cwavec]

I have encountered an apparently fungal foliar disease on my tomato plants.
I do not recognize it, although I have already had some kind of mildew
infection and seen first signs of early blight. This appears to be the
early stages of something else.

I'm going to post photos in the hope that someone can identify this and I
profoundly hope that it is not what I suspect it is.

Photos A1 and A2 - underside and top of leaflet A

Photos B1 and B2 - underside and top of leaflet B

Photos C1 and C2 - underside and top of leaflet C

The leaves, while still on the plant, have a kind of bronze look,
although still green. Some have a black edge. This is occurring
on upper and lower leaves at the same time and began a few days ago.

I have searched as many online descriptions and photos as I am
able to find in a short time and unfortunately the only ones I see
that look anything like this relate to Late Blight. There have already
been reports of Late Blight in Susquehanna County (northeast PA)
and nearby there in NY state. I am just north of Pittsburgh.