Here is a list of important photographers that are worth researching
Bernice Abbott https://en.wikipedia.org/wiki/Berenice_Abbott
Alexander Rodchenko. www.masters-of-photography.com
Alfred Stieglitz A www.masters-of-photography.com
ALVAREZ BRAVO
Andre Kertesz http://www.masters-of-photography.com/K/kertesz/kertesz.html
Andre Kertesz www.photographersgallery.com/by_artist.asp?id=200
Andreas Gursky www.artnet.com
Angus McBean www.npg.org.uk
Annie Leibovitz www.vanityfair.com/contributors/annie-leibovitz
Ansel Adams www.anseladams.com
Anton Corbijn www.corbijn.co.uk
Arnold Newman http://arnoldnewman.com
August Sander www.augustsander.com
Bert Hardy http://thephotographersgallery.org.uk/bert-hardy
Bert Stern www.bertstern.com
Bill Brandt www.billbrandt.com
Brassai www.google.co.uk/search?client=safari&rls=en&dcr=0&biw=1396&bih=747&tbm=isch&sa=1&q=Brassai.&oq=Brassai.&gs_l=psy-ab.3..0i30k1l10.385440.385440.0.385823.1.1.0.0.0.0.89.89.1.1.0....0...1.2.64.psy-ab..0.1.89....0.BxL8NzlN5Io
Brian Duffy www.google.co.uk/search?client=safari&rls=en&dcr=0&biw=1396&bih=747&tbm=isch&sa=1&q=Brian+Duffy+&oq=Brian+Duffy+&gs_l=psy-ab.3..0l10.42987.42987.0.43365.1.1.0.0.0.0.86.86.1.1.0....0...1.2.64.psy-ab..0.1.86....0._vhpxn0NA2c
Bruce Weber www.bruceweber.com
Harry Callaghan https://www.lensculture.com/articles/harry-callahan-harry-callahan-the-photographer-at-work
Julia Margret Cameron http://www.metmuseum.org/toah/hd/camr/hd_camr.htm
Carleton Watkins http://www.carletonwatkins.org/index.php
Cecil Beaton www.staleywise.com
Chris Killip www.chriskillip.com
Cindy Sherman http://www.cindysherman.com
Clarence John Laughlinhttp://www.stephendaitergallery.com/dynamic/artwork_display.asp?ArtworkID=2020
Alvin Langdon Coburn http://www.moma.org/collection/artist.php?artist_id=1164
Corinne Day www.corinneday.co.uk
Imogen Cunningham
David Bailey www.david-bailey.co.uk
David LaChapelle www.lachapellestudio.com
David Loftus www.davidloftus.com
Deborah Turbeville www.deborahturbeville.com
Roy DeCarva
Diane Arbus www.diane-arbus-photography.com
Don McCullin www.markgeorge.com
Dorothea Lange http://www.ibiblio.org/channel/Lange.html
Duane Michals
Eadweard Muybridge http://www.eadweardmuybridge.co.uk
Edward Steichen
Edward Weston www.edward-weston.com
William Eggleston
Ellen Von Unwerth www.artandcommerce.com
Elliott Erwitt www.elliotterwitt.com
Emmet Gowin http://www.aperture.org/event/emmet-gowin-a-life-in-photography/
Erwin Blumenfeld
Eugene Atget www.atgetphotography.com
Eve Arnold www.magnumphotos.com
Roger Fenton
Fox Talbot
Frank HorvatItalian www.horvatland.com
Fredrick Sommer http://www.fredericksommer.org
Lee Friedlander
Garry Winogrand http://www.atgetphotography.com/The-Photographers/Garry-Winogrand.html
Gregory Crewdson http://www.aperture.org/crewdson/
George Hoyningen-Huene www.staleywise.com
George Hurrell http://www.hurrellphotos.com/hurrell_home.asp?ID=2
Gerry Uelsmann
Gordon Parks http://www.pdngallery.com/legends/parks/mainframeset.shtml
Helen Levitt www.npr.org
Helmut Newton www.helmutnewton.com
Henri Cartier-Bresson http://www.henricartierbresson.org/hcb/home_en.htm
Herb Ritts http://www.herbritts.com
HILL & ADAMSON http://www.metmuseum.org/toah/hd/hlad/hd_hlad.htm
Horst P. Horst www.horstphorst.com
Irving Penn www.irvingpenn.com
Jacob Riis http://www.masters-of-photography.com/R/riis/riis_bandits_roost.html
Jacques Henri Lartigue www.lartigue.org
Jane Bown http://www.theguardian.com/profile/jane-bown
Jeanloup Sieff http://www.jeanloupsieff.com
Joel Meyerowitz http://www.joelmeyerowitz.com/photography/
Joel Sternfeld www.joelsternfeld.com
John Gutmann http://www.johngutmann.org
Joseph Karsh http://www.karsh.org
Joseph Koudelka http://www.magnumphotos.com/C.aspx?VP3=CMS3&VF=MAGO31_10_VForm&ERID=24KL535C7T
Julia Margaret Cameron http://www.metmuseum.org/exhibitions/listings/2013/julia-margaret-cameron
Karl Blossfeldt http://www.whitechapelgallery.org/exhibitions/karl-blossfeldt
Larry Clark. www.larryclarkofficialwebsite.com
Leni Riefenstahl http://www.leni-riefenstahl.de/eng/index.html
Lewis Hine http://www.archives.gov/education/lessons/hine-photos/
Lisette Model http://www.getty.edu/art/gettyguide/artMakerDetails?maker=1556
Lothar Wolleh http://www.masters-of-photography.com/W/wolleh/wolleh.html
Man Ray http://www.manraytrust.com
Margret Bourke White http://life.time.com/margaret-bourke-white/
Mario Testino http://www.mariotestino.com
Martin Parr www.martinparr.com
Mary Ellen Mark http://www.maryellenmark.com
Max Waldman http://www.maxwaldman.com/pages/danetn.html
Nadar http://www.getty.edu/art/gettyguide/artMakerDetails?maker=1622
Nan Goldin. www.artnet.com
Nick Knight
Norman Parkinson. www.normanparkinson.com
Patrick Demarchelier http://www.demarchelier.net
Paul Outerbridge http://www.latimes.com/entertainment/la-ca-0322-outerbridge-pg,0,4012904.photogallery#axzz2pjNIzpc0
Paul Strand www.metmuseum.org
Peter Lindbergh www.peterlindbergh.com
Philip Jones www.magnumphotos.com
Ralph Eugene Meatyard http://www.smithsonianmag.com/arts-culture/Ralph-Eugene-Meatyard-The-Man-Behind-the-Masks.html
Ralph Gibson www.ralphgibson.com
Rankin www.rankin.co.uk
Richard Avedon www.richardavedon.com
Richard Billingham www.tate.org.uk
Robert Adams http://media.artgallery.yale.edu/adams/landing.php
Robert Capa http://www.magnumphotos.com/C.aspx?ERID=24KL535353&VF=MAGO31_10_VForm&VP3=CMS3
Robert Doisneau http://www.robert-doisneau.com/fr/portfolio/
Robert Frank www.npr.org
Robert Mapplethorpe www.mapplethorpe.org
Roger Fenton http://www.geh.org
Sarah Moon http://www.vogue.it/en/encyclo/photography/m/sarah-moon-
Sebastião Salgado. www.magnumphotos.com
Simon Norfolk British www.simonnorfolk.com
Snowdon www.npg.org.uk
Stephen Shore http://stephenshore.net
Steven Meisel. www.artandcommerce.com
Terry Richardson www.terryrichardson.com
Tim Page www.timpageimage.com.au
Tim Walker www.timwalkerphotography.com
Timothy O'Sullivan http://www.getty.edu/art/gettyguide/artMakerDetails?maker=1928
Tina Modotti http://www.modotti.com
Tony Ray-Jones
Vivian Maier www.vivianmaier.com
W. Eugene Smith www.smithfund.org
Walker Evans http://www.metmuseum.org/toah/hd/evan/hd_evan.htm
Weegee http://www.moma.org/collection/artist.php?artist_id=1842
William Eggleston http://www.egglestontrust.com
William Klein http://www.designboom.com/portrait/klein_bio.html