When Solomon Merrick moved his family from New England to a plot of land southwest of Miami in 1898, he had no idea that his son, George, would become the founder of one of America's most fabled cities. When the senior Merrick died in 1911, George, who was working in New York, returned to the Miami area, establishing a major citrus and produce farm on his family's land. Then he entered the booming Miami real estate market of the early 1920s, finally...