Book  (Jan 2000)  Page(s) 160.  
 
Angel Cheeks Herbaceous Peony. C.G. Klehm [no date given]. A double pink lactiflora

Book  (Jan 1999)  Page(s) 251.  
 
Angel Cheeks Herbaceous Peony. Klehm (USA). Double Pink. A tightly packed bomb of pale but glowing flesh pink, separated from paler guard petals by a narrow collar of pale yellow.