Anthracnose?

Here are photos of the back and front of leafs from 3 different Avocado cultivators. Is this Anthracnose? If not then what?

part two...

and the last...

Thanks for your time and input.

no one knows anthracnose?

Yes, looks like anthracnose.

http://www.-s.aces.uiuc.edu/photolib/lib17//midsize/anthracnose - silver

The link didn't work. Try googling "Anthracnose on plants Images".

We get the anthracnose on the mango....but not on the avocados. We spray with wettable sulpher but so far it hasn't worked....

I spray my mango with kocide to ward off anthracnose...especially considering I have a Julie dwarf (very susceptible to it). I've been successful thus far.