wpa poster art of pompeys pillar national monument a sandstone pillar and rock formation located in south central montana, united

administration america area art arts artwork central conservation deal design federal flat flora forest forestland forests formation graphic illustration landscape meadow montana monument mountain mountainous national natural nature new nostalgia park pillar pompeys poster print printing program project protected range retro revivalism rock sandstone scenery screen section silk south states style throwback united vector vintage visual wilderness works wpa