Holy cow. There are four states that passed the Equal Rights Amendment and then rescinded it.

Legislators in the following states voted to rescind their earlier ratification of the ERA:[47]

Nebraska (passed March 29, 1972, rescinded March 15, 1973)
Tennessee (passed April 4, 1972, rescinded April 23, 1974)
Idaho (passed March 24, 1972, rescinded February 8, 1977)
Kentucky (passed June 26, 1972, rescinded March 17, 1978)