Book  (1936)  Page(s) 764.  
 
Yanka (hybrid rugosa) Prof. Hansen 1927; Tetonkaha X La Melusine; pink, medium size, semi-double, cup form, in clusters of 3-5, once-blooming, growth 7/10, upright, 1 m, hardy. Sangerhausen

Book  (1927)  Page(s) 53.  
 
Yanka Rose - Introduced 1927. Pedigree: Tetonkaha x Le Melusine, a rugosa hybrid. Plant, three to four feet; flowers, semi-double, pink, blooming in clusters; blooming freely though July and into August.