Baltz' early black and white pictures are formal meditations inspired by Zen and minimalist painting. They are graphic pictures of the mundane surfaces of the city, sometimes exposing its skeletal framework. The photos were oftens shown as wall grids, more popular with the art audience than the photographic community. Baltz' interest in suburban architecture raised questions about the edges of American culture. Baltz is often referred to as a conceptual photographer. His work is not easy to categorise but heralded an interest in topographics which was later explored most consistently in Germany.
Make sure you check out the fantastic collection of Baltz' images online at the George Eastman House site, along with portfolios of work by many other influential photographers. This is easily one of the best resources for photography on the web!