wpa monochrome art general grant tree trail in kings canyon national park sierra nevada california usa grayscale black and white

administration america and area art artwork black california canyon conservation county deal design federal forest fresno general giant grant graphic gray grayscale illustration image kings landmark monochrome monochromic monument national nature nevada new outdoor park portrait poster print printing program project redwood retro screen sequoia sierra silk states stencil tone trail tree tulare united usa vector vintage white wilderness works wpa