NO. 437 FIRST LANDING PLACE OF SAILING LAUNCH COMET - First known sail launch to ascend San Joaquin River from San Francisco landed here autumn, 1846. It carried 20 Mormon pioneers who founded New Hope Agricultural Project on Stanislaus. A yoke of oxen and span of mules were driven from Marsh's Landing (Antioch) by two men who followed a crude map drawn by Merritt the trapper. Two years later Doak and Bonsell operated here the first ferry on San Joaquin River.
19000 S Manthey Rd Lathrop, CA 95330. State plaque located on South Manthey Rd at the entrance to Mossdale Crossing Park. 2.0 mi N of intersection of I-5 and I-205, Tracy