Book  (2007)  Page(s) 197.  
 
'Grand Slam', HT, mr, 1963, Armstrong, D. L. & Swim, H. C., [Charlotte Armstrong X Montezuma] ... description

Book  (Apr 1993)  Page(s) 225.  
 
Grand Slam Hybrid Tea, cherry to rose-red, 1963, 'Charlotte Armstrong' x 'Montezuma'; Armstrong, D.L. Description.

Book  (1966)  Page(s) 111.  
 
Dr. A. S. Thomas. New Roses in Victoria.
Grand Slam HT.  (Swim, 1963) 'Charlotte Armstrong' x 'Montezuma'. Light crimson, pointed blooms of thirty petals opening to about four inches in diameter. Slight fragrance. Good growth.

Book  (1965)  Page(s) 14.  
 
Roy and Heather Rumsey, NSW.  New Roses. 
Grand Slam HT. (D. L. Armstrong and H. C. Swim) A light red with 35-40 petals. The flowers do tend to flop, and many stems have weak necks. It also seems to lose foliage every time it rains. The parentage suggests that it should do better than we have had it so far, so we will keep it growing another year. ('Charlotte Armstrong' x 'Montezuma').