Book  (1928)  Page(s) 58.  
 
A List of Fifty of the Best Inexpensive Varieties
Pink Varieties
La Perle (Crousse).  8.5.  Pink.  If we were selecting 25 peonies for our own planting, we could not do without La Perle.  When the flower first opens, it is a beautiful soft shade of pink which gradually fades to almost a pure white.  Remarkably beautiful both in the opening bud and in the full open bloom.  The writer will never forget great vases of La Perle which graced the show room of the national show at Cleveland.  It seemed the most beautiful flower in the entire show.

Website/Catalog  (1927)  Page(s) 20.  
 
La Perle (Crousse 1885) 
American Peony Society Rating of 8.5 (39 votes)
Rosy flesh pink with silvery border, flecked carmine.  Very delicate color and sweet fragrance.  Strong, erect and a very charming cut-flower.  Very appealing.  Each $1.50

Website/Catalog  (1925)  Page(s) 39.  
 
Paeonia sinensis...La Perle. White with lilac shading, globular cup form, group sort...1 piece M 3.-

Book  (1917)  Page(s) 91.  
 
La Perle. Globular pale pink flowers. Petals vary in depth of colour. Crousse, 1885. Rose. Pink. Large. Midseason. Fragrant. Tall, vigorous grower. Free bloomer. Garden and cutting.

Website/Catalog  (Aug 1910)  Page(s) 10.  
 
La perle (Cr.); chair rosé.

[no longer listed in the 1928 catalogue]

Website/Catalog  (1909)  Page(s) 7.  
 
La Perle. Pretty globular bloom, soft pinkish flesh color, silvery and glossy border; extra...$ 1 25

Website/Catalog  (1906)  Page(s) 39.  
 
La Perle. Globular cup form; cup domed round, white with lilac shading, filling feathery intermixed, soft flesh-coloued; center deep lilac with carmine edges.

Website/Catalog  (1903)  Page(s) 1.  
 
DOUBLE HERBACEOUS PAEONIES ....SERIES B 75 cents each.
Pearl, white, shaded flesh, fine flower.