I used to have a bookmark with a wonderful guide from the U of Florida to tomato diseases. Lots of photos. When my last computer died I lost that bookmark and haven't been able to find it again. This morning I might have found something similar from UF. Here are two. The first of the two is probably a bit better than the second but both are helpful.

https://plantpath.ifas.ufl.edu/u-scout/ ... 18_C-2.pdf

https://edis.ifas.ufl.edu/publication/pp121

Lots more from UF by searching "University of Florida, Tomato Disease identification"

@GoDawgs These are excellent publications. Thank you.

Thanks Patti !!!