The proposed Equal Rights Amendment was sent to the states for ratification after being passed by the U.S. Senate on March 22, 1972. One year later, 30 states had ratified the ERA. In fact, Washington ratified the amendment on March 22, 1973, becoming the 30th "Yes on ERA" state exactly one year later. Feminists were optimistic because the majority of people supported equality and 30 states ratified the ERA in the first year of the "new" ERA ratification struggle.
However, the pace slowed, and only five more states ratified between 1973 and the final ERA deadline in 1982. The amendment fell three states short of the 38 out of 50 it needed to become part of the the U.S. Constitution.
Here is an alphabetical list of the 30 states that ratified the ERA in the first year after it had passed both houses of Congress:
Alaska
California
Colorado
Connecticut
Delaware
Hawaii
Idaho
Iowa
Kansas
Kentucky
Maryland
Massachusetts
Michigan
Minnesota
Nebraska
New Hampshire
New Jersey
New Mexico
New York
Oregon
Pennsylvania
Rhode Island
South Dakota
Tennessee
Texas
Vermont
Washington
West Virginia
Wisconsin
Wyoming