back to the Paleo-Indian period, the Jaega were the first known tribe to have resided along the Florida Atlantic coast in the areas of Martin and Palm Beach counties. The remains of shell mounds sites, mostly dating back to approximately 750–1500 CE, attest to pre-Columbian Jaega inhabitation near Lake Worth Beach, including in Boynton Beach, Palm Beach, and South Palm Beach. Among the city's first non-indigenous settlers were Samuel and Fannie James. The Jameses were an African American couple reported to be ex-slaves, known as the Black Diamonds, who settled on the shores of the Lake Worth Lagoon near the current 5th Avenue South in 1885. A stone monument dedicated to Samuel and Fannie James at the northwest corner of Lucerne Avenue (State Road 802) and J Street inaccurately uses the date 1883, due to a transcription error. The couple made a claim for their land under the Homestead Act in 1885. Their holdings, originally , increased over time to more than , including of homestead land south of Lake Avenue (State Road 802) between M and F Streets; in modern-day College Park, acquired from the estate of William Stephan, where Fannie ran a pineapple farm; and to the south between the current Dixie and Federal highways (Route 1 and State Road 5), acquired from Swedish immigrants Olai and Sarah Gudmundsen. The initial name of the area's first post office was Jewell (sometimes spelled Jewel), which served the few residences between Lantana and West Palm Beach. Between 1889 and 1903, Fannie James served as postmaster of the post office, located in a small dry goods shop, which the couple operated to serve the lake traffic that connected the small pioneer homesteads located along the banks of the Lake Worth Lagoon. Area pioneers also reported that Jewell was included as a stop on the route of the barefoot mailman via the Celestial Railroad by July 1889. Beginning in the 1890s, the Jameses sold off most of their acreage in a number of parcels ranging in size from to new residents and investors. After Samuel's death in 1909, Fannie sold her remaining to the developer, Palm Beach Farms Company, keeping only a 1.25 acre (0.51 ha) farmette, which lay outside the new city limits as required by the segregation provisions of the 1913 town of Lake Worth charter. After Henry Flagler extended the Florida East Coast Railway (FEC) south from West Palm