Meant to share this site aaaaggesss ago. Its a collection of pretty much all the pioneers of photography with a short bio and collection of some of there images. The site pretty much got me the contextual side of my Photography A-level. I would recomend looking at the work of Ansel Adams, the father of landscape photography for a little context to the history and purpose behind this months comp in landscape photography.
http://www.masters-of-photography.com/index.html