Frank Kimball first brought novelty and change to the area by building his personal residence. His home included a bathtub as well as hot, running water, making it the first modern house in the entire county. However, it was more than his personal innovative endeavors that allowed the region to flourish. By constructing the first roads and railroad in what is now National City, Frank and his brothers most notably were responsible for introducing modern transportation to the residents of the community. The brothers also implemented the area’s first post office and a wharf for sea-bound imports and exports. These large ventures, coupled with smaller personal missions, both contributed to the overall goal of creating a community unparalleled to the times. A lasting mark of the Kimballs was the trees they imported and planted from Europe and Asia, accomplished via a partnership with the U.S. Department of Agriculture. These trees can be found dotted throughout the city to this very day. It was the passion and influence of the Kimballs as well as other early pioneers that made way for the city’s incorporation on September 17, 1887.