American families arrived in the addition in the early 1920s, when the Ku Klux Klan forced them out of western Lantana. Two years after the addition was platted, a wooden automobile traffic bridge over Lake Worth was completed in 1919, the same year the Brelsford family of Palm Beach deeded a parcel of land on the barrier island to the town. The town benefited with the rest of South Florida during the Florida land boom of the 1920s, with Lake Worth's population more than quintupling from 1,106 in 1920 to nearly 6,000 in 1930. Following the approval of a $100,000 bond issue in 1920, the Mediterranean Revival-style Lake Worth Casino and Baths was constructed. Opening two years later, the casino drew many tourists to the area. Moreover, the 1920s saw the completion of the Gulf Stream Hotel, which is listed on the National Register of Historic Places (NRHP), as well as the construction of Lake Worth Community High School in 1922 and many commercial and industrial buildings and neighborhoods, including College Park and Lake Worth Heights in 1924. Lake Worth reincorporated as a city in 1925, while boundaries of the municipality expanded several times throughout the land boom. One year later, the Seaboard Air Line Railway constructed a freight and passenger depot in Lake Worth on 4th Avenue North. William A. Boutwell arrived in the area in the 1920s. He established Boutwell Dairy in 1927 and managed the company until retiring in 1956. Boutwell is credited with inventing half & half creamer; the dairy later merged with Alfar Creamery and then T.G. Lee, who distributed the product more widely until it became an American diner staple. Boutwell also owned a grocery store and masonry supply store. Furthermore, he served as a Lake Worth city commissioner from 1924 to 1927 and briefly as vice mayor. During his tenure, the city constructed approximately of roads and two elementary schools, including the still active South Grade Elementary School. The 1928 Okeechobee hurricane devastated Lake Worth. A survey indicated that the storm demolished about 600 homes and damaged 1,500 others, leaving about 700 people homeless. Fewer than 10% of homes escaped damage. Approximately 50 businesses were wrecked and 200 others received damage – roughly 75% of buildings in the business district. The storm demolished or severely damaged many buildings, including First Presbyterian Church, St. Andrew's Episcopal Church, the Oakley Theater, the Gulf Stream Hotel,