argued that immigration laws and ordinances in certain municipalities could create similar situations to those experienced by African Americans in sundown towns. Hispanic Americans are likely to suffer, despite the purported target being undocumented immigrants, in these cases of racial exclusion. From 1851 to at least 1876, Antioch, California, had a sundown ordinance that barred Chinese residents from being out in public after dark. In 1876, white residents drove the Chinese out of town and then burned down the Chinatown section of the city. Chinese Americans were also excluded from most of San Francisco, leading to the establishment of Chinatown. Travel guides Described by former NAACP President Julian Bond as "one of the survival tools of segregated life", The Negro Motorist Green Book (at times titled The Negro Traveler's Green Book or The Negro Motorist Green-Book, and commonly referred to simply as the "Green Book") was an annual segregation-era guidebook for African American motorists, published by New York travel agent and former Hackensack, New Jersey, letter carrier Victor H. Green. It was published in the United States from 1936 to 1966, during the Jim Crow era, when discrimination against non-whites was widespread. Road trips for African Americans were fraught with inconveniences and dangers because of racial segregation, racial profiling by police, the phenomenon of travelers just "disappearing", and the existence of numerous sundown towns. According to author Kate Kelly, "there were at least 10,000 'sundown towns' in the United States as late as the 1960s; in a 'sundown town' nonwhites had to leave the city limits by dusk, or they could be picked up by the police or worse. These towns were not limited to the South—they ranged from Levittown, N.Y., to Glendale, Calif., and included the majority of municipalities in Illinois." The Green Book also advised drivers to wear, or have ready, a chauffeur's cap and, if stopped, relate that "they were delivering a car for a white person." On June 7, 2017, the NAACP issued a warning to prospective African American travelers to Missouri. This is the first NAACP warning ever covering an entire state. The NAACP conference president suggested that, if prospective African American travelers must go to Missouri, they travel with bail money in hand. Sundown suburbs Many suburban areas in the United States were incorporated following the establishment of Jim Crow laws. The majority of suburbs were made up of all white residents from the