Magazine  (2021)  Page(s) 15. Vol 43, No. 4.  
 
Deane Ross. Mlle Cecile Brunner and her Entourage.....
Maureen Ross' post script 2021:  
We now know of further roses with the connection to Perle d’Or. Climbing Perle d’Or was discovered in Mildura, a quite vigorous climber with repeat flowering and a lovely display (released c. 2004). (A photo has been printed in a previous Journal.)

Book  (Feb 2009)  Page(s) 219.  
 
‘Perle d’Or Climbing’: Polyantha. Mutation grimpante du buisson. Origines, date d’obtention non connues. Hauteur: 2m50. Le grimpant vigoureux, que l’on confond souvent avec la variété initiale, se recontre encore dans certains jardins.

Book  (Apr 1993)  Page(s) 443.  
 
Perle d'Or, Climbing Climbing Polyantha, yellow blend, ('Yellow Cécile Brünner, Climbing')

Book  (Jun 1992)  Page(s) 222.  
 
Perle d'Or, Cl. ('Yellow Cécile Brunner, Cl.') Introducer and date unknown. Polyantha. Sport of 'Perle d'Or'. [Author cites information from different sources.]

Book  (1958)  Page(s) 293.  
 
Perle d'Or, Cl. (Cl. Yellow Cécile Brunner). Cl. Pol. 

Website/Catalog  (1952)  Page(s) 93.  
 
Yellow Cecile Brunner Climber (Cli. Perle d'Or) This is a lively and lusty climbing sport of the popular polyantha, Perle d'Or, described herein. The color leans to the apricot shades--hence the term "yellow" is misleading, --at least to those who visualize farm-churned butter or the canary's wing. Recommended where it has room to grow bigger and more abundant with every season. Don't worry, --you'll like those golden-apricot shades. 3 for $3.90 each 1.50

Book  (1930)  Page(s) 22.  
 
The Best Climbing and Pillar Roses
For you who love the abandon and vigor of the climbing Rose here is an assortment of Climbers for all climates that is reliable, covers all shades of color, and constitutes, we think, one of the most complete offerings of its kind in America.  Strong 2 and 3 year old, field grown plants that will quickly give a wealth of bloom. We also carry a stock of larger Climbing Roses, with trellises, in tubs for immediate effects.
Climbing Cecile Brunner, Yellow  A sport of the Climbing Cecile Brunner but with apricot-yellow flowers instead of pink.  ...  $1.00