Book  (1971)  Page(s) 125.  
 
'Swan Lake'. Large-flowered climber. Large, fully double flowers, 10 to 12.5 cm (4 to 5 in.) across, pure white with pale pink shading in the centre, have a moderate fragrance. Plants bloom continuously and grow to a height of 2.4 to 3 metres (8 to 10 ft). Introduced 1968.