It's what there is. In the area in which you live in.
these were influential in my starting to take photos:
a walker in the city by alfred kazin
wpa guides of the 30's
how the other half lives by jacob riis
american pictures by jakob holdt
the secret paris of the 30's by brassai
warhol's factory period
diane arbus
in+out city limits photos by rauschenberg
weegee
the music of the velvet underground
USA