Question: When was the sixth studio album released in the United States by the first Australian pop music group to achieve major chart and sales success in the United Kingdom and the United States?
Sentence (from "The Seekers"): They were popular during the 1960s with their best-known configuration as: Judith Durham on vocals, piano, and tambourine; Athol Guy on double bass and vocals; Keith Potger on twelve-string guitar, banjo, and vocals; and Bruce Woodley on guitar, mandolin, banjo, and vocals.
Relevant evidence: No