<Tr> <Td> 1860 </Td> <Td> Chico </Td> <Td> California </Td> <Td> United States </Td> <Td> </Td> </Tr> <Tr> <Td> 1863 </Td> <Td> Boise </Td> <Td> Idaho </Td> <Td> United States </Td> <Td> </Td> </Tr> <Tr> <Td> 1863 </Td> <Td> Wichita </Td> <Td> Kansas </Td> <Td> United States </Td> <Td> </Td> </Tr> <Tr> <Td> 1864 </Td> <Td> Casper </Td> <Td> Wyoming </Td> <Td> United States </Td> <Td> Originally called Platte Bridge Station . </Td> </Tr>

Where were the earliest major american cities located