Book  (2012)  Page(s) 112.  
 
Morden Centennial. Medium pink. 40 [petals]. 36". Repeat.
A Parkland rose. Bushy, dense. Excellent bedding plant.Clusters of lovely, 4-inch (10-cm) flowers with slight to moderate fragrance. Pink often rose to lilac floral coloration. Good spring and fall bloom. Nice, semi-glossy, dark foliage. Susceptible to black spot. May die back in severe weather, but basically hardy. (zone 3 to 4).

Book  (Dec 1998)  Page(s) 422.  
 
Morden Centennial Modern Shrub. Marshall (Canada) 1980... bred by the Department of Agriculture in Canada for severe winter conditions... double, medium pink flowers that occur in clusters of up to 15...

Book  (Apr 1993)  Page(s) 390.  
 
Morden Centennial Shrub, medium pink, 1980, 'Prairie Princess' x ('White Bouquet' x ('J.W. Fargo' x 'Assiniboine')); Marshall, H.H. Description.