Is there a place where I can find many images by famous photographers descent?

I'm looking for a large number Famous photographers like, Holly Roberts, Lucas Samaras, Paul Strand, etc. .. I have many. I am in need of large images good enough to be put into the presentation Power Point. I think the photos, but are scattered througout the Internet. "I can find in one place?

I came across an article that specializes PowerPoint presentations and recommendated OutWit Images. http://www.indezine.com/mediamazine/2009/02/focus-on-outwit-images.html recommend Google Image Search pictures by famous photographers. It's a pain to have dispersed images for a given size. Images frustrate solves both problems. Firefox is free Mozilla Add-ons, or the site, outwit.com. This an image browser that automatically displays all search results and lets you go directly to images high resolution. You can define the exact size of photos you want. The catch is that you can have peaks all the way up to page 10 to 100, you can Do not miss with OutWit.

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