17th-18thcenturies 17thcentury 1902-1984 19thcentury adams americanphotographers ansel art artistic artisticphotography bildband biographies biography correspondance correspondence dutch europe european exhibitions france french hechenblaikner impressionism(art) indiansofnorthamerica juvenileliterature landscapepainting landscapephotography landscapes landschaftsphotographie lois modern nationalparksandreserves naturephotography netherlands painting photographers photographes photographie photographieartistique photography pictorialworks portraitphotography postcards renaissance snowinart unitedstates universityofcalifornia(system)