 A formal induction ceremony was held in Cooperstown, New York, on August 6, 1990; after being delayed a day due to rain, it was held indoors due to continued bad weather.The BBWAA was authorized to elect players active in 1970 or later, but not after 1984; the ballot included candidates from the 1989 ballot who received at least 5% of the vote but were not elected, along with selected players, chosen by a screening committee, whose last appearance was in 1984.All 10-year members of the BBWAA were eligible to vote.