Under the dome

75 years ago, 1942: Ohio's 3 percent sales tax broke all records in 1941, with a yield of $65,246,532 or $14,737,866 more than 1940. The state treasurer attributed the gain to an enormous increase in business stimulated by defense and to the state's redemption of the cancelled sales tax stamps.50 years ago, 1967: The dome for the Sidney Frohman Planetarium arrived at the Sandusky High School. The inner planetarium dome, 30 feet in diameter, would be installed in late March. The outer 16-foot observatory dome was scheduled for installation about the same time.25 years ago, 1992: Jeffrey Dahmer pleaded guilty but insane to the mutilation slayings of 15 young males, and now a jury must determine his mental state at the time of the killings. Dahmer was accused of luring victims to his apartment, drugging, killing and dismembering them.10 years ago, 2007: Ohio Bike Week lined up its first national sponsor. Progressive Insurance Co. agreed to be a large-scale contributor to the 10 days worth of activities. The event was in its seventh year and had seen tremendous growth, but that meant the bills were getting bigger alongside the profits.