Book  (Jun 1992)  Page(s) 43.  
 
Flag of the Union Tea. A striped sport of 'Bon Silène'. (Hallock & Thorpe, date uncertain.)

Book  (1936)  Page(s) 263.  
 
Flag of the Union (tea) Hallock & Thorpe ca. 1920; sport of Bon Siléne; ?

Book  (1922)  Page(s) 174.  
 
Flag of the Union, Tea (Hallock & Thorpe.) Sport from Bon Silene.

Book  (1912)  Page(s) 95.  
 
Bon Silene has produced Annie Cook , Charles Rovolli , Flag of the Union , Souvenir de Woolton , and White Bon Silene .

Article (magazine)  (1902)  Page(s) 476.  
 
Previous to all of these were two sports from ' Bon Silene,' ' Flag of the Union,' and ' American Banner ' ; they were great failures, for the American people, proud though they be of the Stars and Stripes, like self-coloured Roses.

Book  (1893)  Page(s) 257-258.  
 
Flag of the Union. T.  Described by Hallock & Thorpe as "a sport from Bon Silène, being a facsimile of the parent in habit of growth and freedom of bloom; the flowers are equal in size to Bon Silène. The markings are not quite so distinct as in American Banner, i.e., the predominant color is rose instead of white, but each flower is regularly marked; it is a very pleasing variety."

Magazine  (6 Sep 1884)  Page(s) 211.  
 
Flag of the Union. T.  Described by Hallock & Thorpe as "a sport from Bon Silène, being a facsimile of the parent in habit of growth and freedom of bloom; the flowers are equal in size to Bon Silène. The markings are not quite so distinct as in American Banner, i.e., the predominant color is rose instead of white, but each flower is regularly marked; it is a very pleasing variety."

Book  (1883)  Page(s) 221.  
 
Flag of the Union.- Like the American Banner, a sport of Bon Silene, but has more rose color than white; flowers said to equal the original in size.