This information is listed as such because IMDb(אורכב 21.06.2014 בארכיון Wayback Machine) does not list anyone having received the award prior to 1960, and then throughout the 70s.
This information is listed as such because IMDb(אורכב 21.06.2014 בארכיון Wayback Machine) does not list anyone having received the award prior to 1960, and then throughout the 70s.