The ARS Photographica blog has been posting some of the best black and white photography for some time now. And although it looks like future posts won’t be bilingual (Spanish and English), but only Spanish, I don’t think that’s much of a problem as the images are what make the ARS Photographica a great resource for a variety of great B/W photography.
Some of my all time favorites are here such as Sebastião Salgado and Nick Brandt.
For a list of the photographers on the blog, click here.