Book  (2005)  Page(s) 120.  
 
location I:I/5, Marysa, Brada, Dr. 1936, Pol., white, small, semi-double, mild fragrance, medium-high

Book  (19 Apr 2000)  Page(s) 351.  
 
'Marysa', Pol, w, 1936; flowers pure white, moderate, lily-of-the-valley fragrance; vigorous growth; Brada, Dr.; Böhm

Book  (1940)  Page(s) 23, 25, 136.  
 
Page 23: Jan Böhm, Blatna-Cechy, Czechoslovakia. 'Marysa'
Page 25: Dr. Gustav Brada, Czechoslovakia. 'Marysa'
Page 136. 'Marysa'. Pol, (Brada; int. Bohm '36), Lily-of-the-valley fragrance, pure white. Vig.