It moved to the fall NABC in 1933 until it was replaced by the Rockwell Mixed Pairs in 1946.
It was contested at the newly created Spring NABC from 1958 to 1962[citation needed] .
Two pairs did win the Hilliard trophy more than once after it was downgraded in status: Kay and James Dunn, three times, Helen and Morris Portugal twice, all during the five-year span 1951 to 1955.
Mary Jane and Arnold Kauder won in 1949 and finished second in 1950 and 1957.
Married couples did not generally dominate the event, however.