Book  (2007)  Page(s) 358.  
 
Nilsson Guy, F, dp, 1930, [sport of Lafayette], Leenders, M ... short descripton

Book  (1936)  Page(s) 325.  
 
Guy, Nilson (polyantha) M. Leenders 1930; sport of Jos. Guy; deep pink, large, semi-double, lasting, cluster-flowered, habit as above. Sangerhauen