Another extension of the ILA’s influence came with the “March Inland.” Longshore union leaders understood that to protect its wharf jurisdiction they had to organize the warehouses lining the waterfront and in nearby industrial districts. In the Bay Area Local 6 soon boasted nearly nine thousand members. In Los Angeles Local 26 began with a downtown pharmaceutical warehouse and expanded to several more. The local also organized a number of other industrial workplaces. Its most dynamic early leader was Bert Corona.