SMARTSVILLE, Calif. —Smartsville just reclaimed something taken from it nearly a century ago: its second “s.” The unincorporated town has been described variously as Smartville and Smartsville since the U.S. Postal Service declared the second “s” to be grammatically incorrect in 1909. Residents have been fighting the charge ever since. Last week, the U.S. Board on Geographic Names agreed, ruling that the community can resume using its original name. Resident Kit Burton, who organized the effort, said the decision caps an epic struggle for Smartsville’s “identity, reputation and dignity.”