Book  (1936)  Page(s) 316.  
 
Greatheart (HT) Rosenbluth 1921; sport of Mrs. W. Easlea; pale flesh-coloured, shaded salmon, silvery reflexes, center darker, large, double, cup form, lasting, solitary, continuous bloom, growth 6/10, upright.

Book  (1930)  Page(s) 96.  
 
'Greatheart'. HT (E. M. Rosenbluth, 1921). Sport of 'Mrs. Walter Easlea'. Type, 'Mme. Edmond Rostand' but better. Bud medium size, long-pointed to ovoid; flower large, double, cupped, very lasting, moderately fragrant, pale flesh, shaded salmon, deeper at center, silvery reflexes, borne singly on long, strong stem. Foliage medium size, soft, rich green, disease-resistant. Many thorns. Growth vigorous, upright; blooms all summer.

Book  (1924)  Page(s) 197.  
 
1921 Registrations. 'Greatheart' HT (Sport 'Mrs. Walter Easlea'). E. M. Rosenbluth, Wallingford, Pa.