Book  (1940)  Page(s) 21, 23.  
 
Page 21: Blatná Hybrid Tea. (Böhm, 1927)... velvety dark red with black spots...
Page 23: Jan Böhm, Blatna-Cechy, Czechoslovakia. 'Blatná'

Book  (1936)  Page(s) 82.  
 
Blatná, (HT) J. Böhm 1927; Lt. Chauré X O. Cordel; velvety dark red, petals stained black, very large, double, camelia-form, globular, lasting, solitary, fragrance 3/10, floriferous,continuous bloom, growth 5/10, upright, Sangerhausen

Magazine  (Nov 1930)  Page(s) 148.  
 
Jan Böhm a créé quinze belles nouveautés : Manja Böhm, 1925; Blatna, 1927; Bohemia, 1928; J. Böhm, 1928;  Antchi Böhm, 1929; Lidka Böhm, 1929; Ministre Rachine, 1930; Krasna Urslavanka. La Belle Uslavanka, 1930; Slava Böhm, 1930; Pilsen, 1930; Alois Jirasek, 1931; Bozene Nemcova, 1931 ; Slata Praha, 1931 ; Jubilé-Masaryk, 1931; Briand-Paneurope, 1931.