Book  (2001)  Page(s) 93.  
 
Yellow Simplicity Shrub, deep yellow, 1997. Not rated.

Book  (2000)  Page(s) 118.  
 
Geoff Swane. Swane’s New Rose Introductions for 2000
Yellow Simplicity (JACyelsh) Floribunda. Like its predecessors, this is a wide, upright easy-care hedge rose. Bright yellow blooms repeat all season in large clusters to cheer any landscape.

Website/Catalog  (28 Dec 1998)  Page(s) 53.  Includes photo(s).
 
Yellow Simplicity® (JACyelsh) Description... Rich, golden yellow with no fade-away to white...

Article (magazine)  (19 Nov 1998)  Page(s) 143.  
 
JACyelsh Shrub, deep yellow, 1998; (Yellow Simplicity®); Seedling x Seedling; Zary, Keith. Description.