While busy singing with the NYCO, Yeend also sang in operas with other companies in both the United States and Europe. She made her debut with the Vienna Staatsoper in 1953 as Violetta. That same year she made her first appearance at London's Royal Opera House at Covent Garden as Mimi. In 1956 she toured North America with the NBC Opera Theatre portraying Cio-cio-san in Puccini's "Madama Butterfly". Another Puccini role, the ice princess Turandot, was a part with which Yeend became particularly associated, portraying the part with the San Antonio Grand Opera Festival, Cincinnati Opera, New Orleans Opera, San Francisco Opera, Philadelphia Lyric Opera Company (1958), Vienna State Opera (1958) and at the Arena di Verona Festival (1958).