Book  (1936)  Page(s) 297.  
 
Ghika, Princesse Yvonne (HT) Mühle 1926; St. Glaser X Harry Kirk (?); alabaster-white, center salmon-yellow, medium size, double, globular to cup form, lasting, in clusters of 2-5, fragrance 4/10, floriferous, continuous bloom, medium size dark green foliage, growth 5/10, bushy. Sangerhausen

Article (misc)  (Feb 1927)  Page(s) 225.  
 
Princesse Yvonne Ghika Hybrid Tea. (Arpad Mühle, 1926.) Seedling of 'Harry Kirk'. Type, 'Souvenir de la Malmaison'. Description... alabaster-white with orange center...